From bdc9928db8c1bf75e1263b01c84587ad19ef16f1 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Sat, 27 Jun 2026 11:11:20 -0400
Subject: [PATCH] feat: init

---
 .gitignore                             |    33 +
 tl/.gitignore                          |    15 +
 tl/README.md                           |   194 +
 tl/dev/dev.sh                          |    19 +
 tl/dev/media_server.py                 |   117 +
 tl/dev/user.cljs                       |     8 +
 tl/package-lock.json                   |   273 +
 tl/package.json                        |    18 +
 tl/resources/public/index.html         |    15 +
 tl/resources/public/one_two_three.otio | 91754 +++++++++++++++++++++++
 tl/shadow-cljs.edn                     |    29 +
 tl/src/tl/config.cljs                  |     4 +
 tl/src/tl/core.cljs                    |    26 +
 tl/src/tl/db.cljs                      |    56 +
 tl/src/tl/events.cljs                  |    73 +
 tl/src/tl/marks.cljs                   |    89 +
 tl/src/tl/md.cljs                      |    59 +
 tl/src/tl/otio.cljs                    |    66 +
 tl/src/tl/subs.cljs                    |    94 +
 tl/src/tl/views.cljs                   |   335 +
 20 files changed, 93277 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 tl/.gitignore
 create mode 100644 tl/README.md
 create mode 100755 tl/dev/dev.sh
 create mode 100755 tl/dev/media_server.py
 create mode 100644 tl/dev/user.cljs
 create mode 100644 tl/package-lock.json
 create mode 100644 tl/package.json
 create mode 100644 tl/resources/public/index.html
 create mode 100644 tl/resources/public/one_two_three.otio
 create mode 100644 tl/shadow-cljs.edn
 create mode 100644 tl/src/tl/config.cljs
 create mode 100644 tl/src/tl/core.cljs
 create mode 100644 tl/src/tl/db.cljs
 create mode 100644 tl/src/tl/events.cljs
 create mode 100644 tl/src/tl/marks.cljs
 create mode 100644 tl/src/tl/md.cljs
 create mode 100644 tl/src/tl/otio.cljs
 create mode 100644 tl/src/tl/subs.cljs
 create mode 100644 tl/src/tl/views.cljs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6359c7c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,33 @@
+# Build output
+/target/
+/checkouts/
+/out/
+/src/gen/
+public/js
+resources/public/js/compiled/
+
+# Clojure / Leiningen / shadow-cljs
+pom.xml
+pom.xml.asc
+*.jar
+.lein-*
+.nrepl-port
+.cpcache/
+.shadow-cljs/
+*-init.clj
+
+# Tooling caches (keep configs, drop caches)
+.clj-kondo/.cache/
+.lsp/.cache/
+
+# Node
+node_modules/
+
+# Logs
+*.log
+
+# Editors / OS
+*.iml
+.idea/
+.vscode/
+.DS_Store
diff --git a/tl/.gitignore b/tl/.gitignore
new file mode 100644
index 0000000..d785b67
--- /dev/null
+++ b/tl/.gitignore
@@ -0,0 +1,15 @@
+/out/
+/resources/public/js/compiled/
+/target/
+/*-init.clj
+/*.log
+
+# Leiningen
+/.lein-*
+/.nrepl-port
+
+# Node.js dependencies
+/node_modules/
+
+# shadow-cljs cache, port files
+/.shadow-cljs/
diff --git a/tl/README.md b/tl/README.md
new file mode 100644
index 0000000..2a4e228
--- /dev/null
+++ b/tl/README.md
@@ -0,0 +1,194 @@
+# tl
+
+A [re-frame](https://github.com/day8/re-frame) application designed to ... well, that part is up to
+you.
+
+## Getting Started
+
+### Project Overview
+
+* Architecture:
+[Single Page Application (SPA)](https://en.wikipedia.org/wiki/Single-page_application)
+* Languages
+  - Front end is [ClojureScript](https://clojurescript.org/) with ([re-frame](https://github.com/day8/re-frame))
+* Dependencies
+  - UI framework: [re-frame](https://github.com/day8/re-frame)
+  ([docs](https://github.com/day8/re-frame/blob/master/docs/README.md),
+  [FAQs](https://github.com/day8/re-frame/blob/master/docs/FAQs/README.md)) ->
+  [Reagent](https://github.com/reagent-project/reagent) ->
+  [React](https://github.com/facebook/react)
+* Build tools
+  - CLJS compilation, dependency management, REPL, & hot reload: [`shadow-cljs`](https://github.com/thheller/shadow-cljs)
+* Development tools
+  - Debugging: [CLJS DevTools](https://github.com/binaryage/cljs-devtools)
+
+#### Directory structure
+
+* [`/`](/../../): project config files
+* [`dev/`](dev/): source files compiled only with the [dev](#running-the-app) profile
+  - [`user.cljs`](dev/cljs/user.cljs): symbols for use during development in the
+[ClojureScript REPL](#connecting-to-the-browser-repl-from-a-terminal)
+* [`resources/public/`](resources/public/): SPA root directory;
+[dev](#running-the-app) / [prod](#production) profile depends on the most recent build
+  - [`index.html`](resources/public/index.html): SPA home page
+    - Dynamic SPA content rendered in the following `div`:
+        ```html
+        <div id="app"></div>
+        ```
+    - Customizable; add headers, footers, links to other scripts and styles, etc.
+  - Generated directories and files
+    - Created on build with either the [dev](#running-the-app) or [prod](#production) profile
+    - `js/compiled/`: compiled CLJS (`shadow-cljs`)
+      - Not tracked in source control; see [`.gitignore`](.gitignore)
+* [`src/tl/`](src/tl/): SPA source files (ClojureScript,
+[re-frame](https://github.com/Day8/re-frame))
+  - [`core.cljs`](src/tl/core.cljs): contains the SPA entry point, `init`
+* [`.github/workflows/`](.github/workflows/): contains the
+[github actions](https://github.com/features/actions) pipelines.
+  - [`test.yaml`](.github/workflows/test.yaml): Pipeline for testing.
+
+
+### Editor/IDE
+
+Use your preferred editor or IDE that supports Clojure/ClojureScript development. See
+[Clojure tools](https://clojure.org/community/resources#_clojure_tools) for some popular options.
+
+### Environment Setup
+
+1. Install [JDK 8 or later](https://openjdk.java.net/install/) (Java Development Kit)
+2. Install [Node.js](https://nodejs.org/) (JavaScript runtime environment) which should include
+   [NPM](https://docs.npmjs.com/cli/npm) or if your Node.js installation does not include NPM also install it.
+5. Clone this repo and open a terminal in the `tl` project root directory
+
+### Browser Setup
+
+Browser caching should be disabled when developer tools are open to prevent interference with
+[`shadow-cljs`](https://github.com/thheller/shadow-cljs) hot reloading.
+
+Custom formatters must be enabled in the browser before
+[CLJS DevTools](https://github.com/binaryage/cljs-devtools) can display ClojureScript data in the
+console in a more readable way.
+
+#### Chrome/Chromium
+
+1. Open [DevTools](https://developers.google.com/web/tools/chrome-devtools/) (Linux/Windows: `F12`
+or `Ctrl-Shift-I`; macOS: `⌘-Option-I`)
+2. Open DevTools Settings (Linux/Windows: `?` or `F1`; macOS: `?` or `Fn+F1`)
+3. Select `Preferences` in the navigation menu on the left, if it is not already selected
+4. Under the `Network` heading, enable the `Disable cache (while DevTools is open)` option
+5. Under the `Console` heading, enable the `Enable custom formatters` option
+
+#### Firefox
+
+1. Open [Developer Tools](https://developer.mozilla.org/en-US/docs/Tools) (Linux/Windows: `F12` or
+`Ctrl-Shift-I`; macOS: `⌘-Option-I`)
+2. Open [Developer Tools Settings](https://developer.mozilla.org/en-US/docs/Tools/Settings)
+(Linux/macOS/Windows: `F1`)
+3. Under the `Advanced settings` heading, enable the `Disable HTTP Cache (when toolbox is open)`
+option
+
+Unfortunately, Firefox does not yet support custom formatters in their devtools. For updates, follow
+the enhancement request in their bug tracker:
+[1262914 - Add support for Custom Formatters in devtools](https://bugzilla.mozilla.org/show_bug.cgi?id=1262914).
+
+## Development
+
+### Running the App
+
+Start a temporary local web server, build the app with the `dev` profile, and serve the app,
+browser test runner and node test runner with hot reload:
+
+```sh
+npm install
+npx shadow-cljs watch app
+```
+
+Please be patient; it may take over 20 seconds to see any output, and over 40 seconds to complete.
+
+When `[:app] Build completed` appears in the output, browse to
+[http://localhost:8280/](http://localhost:8280/).
+
+[`shadow-cljs`](https://github.com/thheller/shadow-cljs) will automatically push ClojureScript code
+changes to your browser on save. To prevent a few common issues, see
+[Hot Reload in ClojureScript: Things to avoid](https://code.thheller.com/blog/shadow-cljs/2019/08/25/hot-reload-in-clojurescript.html#things-to-avoid).
+
+Opening the app in your browser starts a
+[ClojureScript browser REPL](https://clojurescript.org/reference/repl#using-the-browser-as-an-evaluation-environment),
+to which you may now connect.
+
+#### Connecting to the browser REPL from your editor
+
+See
+[Shadow CLJS User's Guide: Editor Integration](https://shadow-cljs.github.io/docs/UsersGuide.html#_editor_integration).
+Note that `npm run watch` runs `npx shadow-cljs watch` for you, and that this project's running build ids is
+`app`, `browser-test`, `node-test`, or the keywords `:app`, `:browser-test`, `:node-test` in a Clojure context.
+
+Alternatively, search the web for info on connecting to a `shadow-cljs` ClojureScript browser REPL
+from your editor and configuration.
+
+For example, in Vim / Neovim with `fireplace.vim`
+1. Open a `.cljs` file in the project to activate `fireplace.vim`
+2. In normal mode, execute the `Piggieback` command with this project's running build id, `:app`:
+    ```vim
+    :Piggieback :app
+    ```
+
+#### Connecting to the browser REPL from a terminal
+
+1. Connect to the `shadow-cljs` nREPL:
+    ```sh
+    lein repl :connect localhost:8777
+    ```
+    The REPL prompt, `shadow.user=>`, indicates that is a Clojure REPL, not ClojureScript.
+
+2. In the REPL, switch the session to this project's running build id, `:app`:
+    ```clj
+    (shadow.cljs.devtools.api/nrepl-select :app)
+    ```
+    The REPL prompt changes to `cljs.user=>`, indicating that this is now a ClojureScript REPL.
+3. See [`user.cljs`](dev/cljs/user.cljs) for symbols that are immediately accessible in the REPL
+without needing to `require`.
+
+### Running `shadow-cljs` Actions
+
+See a list of [`shadow-cljs CLI`](https://shadow-cljs.github.io/docs/UsersGuide.html#_command_line)
+actions:
+```sh
+npx shadow-cljs --help
+```
+
+Please be patient; it may take over 10 seconds to see any output. Also note that some actions shown
+may not actually be supported, outputting "Unknown action." when run.
+
+Run a shadow-cljs action on this project's build id (without the colon, just `app`):
+```sh
+npx shadow-cljs <action> app
+```
+### Debug Logging
+
+The `debug?` variable in [`config.cljs`](src/cljs/tl/config.cljs) defaults to `true` in
+[`dev`](#running-the-app) builds, and `false` in [`prod`](#production) builds.
+
+Use `debug?` for logging or other tasks that should run only on `dev` builds:
+
+```clj
+(ns tl.example
+  (:require [tl.config :as config])
+
+(when config/debug?
+  (println "This message will appear in the browser console only on dev builds."))
+```
+
+## Production
+
+Build the app with the `prod` profile:
+
+```sh
+npm install
+npm run release
+```
+
+Please be patient; it may take over 15 seconds to see any output, and over 30 seconds to complete.
+
+The `resources/public/js/compiled` directory is created, containing the compiled `app.js` and
+`manifest.edn` files.
diff --git a/tl/dev/dev.sh b/tl/dev/dev.sh
new file mode 100755
index 0000000..5510eea
--- /dev/null
+++ b/tl/dev/dev.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+# Dev launcher: runs the shadow-cljs watch AND the range-capable media server
+# together, and tears both down on exit (Ctrl-C kills the whole group).
+#
+#   npm run dev
+#
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+cleanup() { kill 0 2>/dev/null || true; }
+trap cleanup EXIT INT TERM
+
+echo "[dev] starting media server (port ${MEDIA_PORT:-8281}, range-capable, autoreload)"
+python3 dev/media_server.py &
+
+echo "[dev] starting shadow-cljs watch app (port 8280)"
+npx shadow-cljs watch app &
+
+wait
diff --git a/tl/dev/media_server.py b/tl/dev/media_server.py
new file mode 100755
index 0000000..71ff5d6
--- /dev/null
+++ b/tl/dev/media_server.py
@@ -0,0 +1,117 @@
+#!/usr/bin/env python3
+"""Range-capable static file server for dev media (video).
+
+shadow-cljs :dev-http and Python's stdlib http.server both ignore the HTTP
+Range header and answer 200 with the whole file. Safari/iOS refuse to play
+an HTML5 <video> unless the server answers Range requests with 206, so the
+video fails when viewed over Tailscale on a phone/tablet.
+
+This serves resources/public on a dedicated port WITH byte-range support, so
+<video> can stream/seek. Run alongside `npx shadow-cljs watch app`:
+
+    python3 dev/media_server.py
+"""
+import http.server
+import os
+import re
+import sys
+import threading
+import time
+
+PORT = int(os.environ.get("MEDIA_PORT", "8281"))
+ROOT = os.path.join(os.path.dirname(__file__), "..", "resources", "public")
+
+
+class RangeHandler(http.server.SimpleHTTPRequestHandler):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, directory=os.path.abspath(ROOT), **kwargs)
+
+    def end_headers(self):
+        self.send_header("Access-Control-Allow-Origin", "*")
+        self.send_header("Accept-Ranges", "bytes")
+        super().end_headers()
+
+    def send_head(self):
+        rng = self.headers.get("Range")
+        if rng is None:
+            return super().send_head()
+
+        path = self.translate_path(self.path)
+        try:
+            f = open(path, "rb")
+        except OSError:
+            self.send_error(404, "File not found")
+            return None
+
+        size = os.fstat(f.fileno()).st_size
+        m = re.match(r"bytes=(\d*)-(\d*)", rng)
+        start_s, end_s = (m.group(1), m.group(2)) if m else ("", "")
+        start = int(start_s) if start_s else 0
+        end = int(end_s) if end_s else size - 1
+        end = min(end, size - 1)
+        if start > end:
+            f.close()
+            self.send_error(416, "Requested Range Not Satisfiable")
+            self.send_header("Content-Range", f"bytes */{size}")
+            return None
+
+        self.send_response(206)
+        self.send_header("Content-Type", self.guess_type(path))
+        self.send_header("Content-Range", f"bytes {start}-{end}/{size}")
+        self.send_header("Content-Length", str(end - start + 1))
+        self.end_headers()
+        f.seek(start)
+        self._range = (f, start, end)  # consumed by copyfile override
+        return f
+
+    def copyfile(self, source, outputfile):
+        rng = getattr(self, "_range", None)
+        try:
+            if rng is None:
+                return super().copyfile(source, outputfile)
+            f, start, end = rng
+            remaining = end - start + 1
+            while remaining > 0:
+                chunk = f.read(min(64 * 1024, remaining))
+                if not chunk:
+                    break
+                outputfile.write(chunk)
+                remaining -= len(chunk)
+        except (BrokenPipeError, ConnectionResetError):
+            # Client (e.g. Safari) closed the connection mid-stream while
+            # seeking/pausing — normal for <video>, nothing to log.
+            pass
+
+    def handle_one_request(self):
+        try:
+            super().handle_one_request()
+        except (BrokenPipeError, ConnectionResetError):
+            self.close_connection = True
+
+
+def _autoreload(interval=1.0):
+    """Restart the process when this script changes, so edits take effect live."""
+    path = os.path.abspath(__file__)
+    try:
+        mtime = os.path.getmtime(path)
+    except OSError:
+        return
+    while True:
+        time.sleep(interval)
+        try:
+            m = os.path.getmtime(path)
+        except OSError:
+            continue
+        if m != mtime:
+            print("media server: change detected, reloading...", flush=True)
+            os.execv(sys.executable, [sys.executable] + sys.argv)
+
+
+if __name__ == "__main__":
+    addr = ("0.0.0.0", PORT)
+    print(f"media server (range-capable) on http://0.0.0.0:{PORT} serving {os.path.abspath(ROOT)}")
+    threading.Thread(target=_autoreload, daemon=True).start()
+    try:
+        http.server.ThreadingHTTPServer(addr, RangeHandler).serve_forever()
+    except KeyboardInterrupt:
+        sys.exit(0)
diff --git a/tl/dev/user.cljs b/tl/dev/user.cljs
new file mode 100644
index 0000000..3f4368d
--- /dev/null
+++ b/tl/dev/user.cljs
@@ -0,0 +1,8 @@
+(ns cljs.user
+  "Commonly used symbols for easy access in the ClojureScript REPL during
+  development."
+  (:require
+    [cljs.repl :refer (Error->map apropos dir doc error->str ex-str ex-triage
+                       find-doc print-doc pst source)]
+    [clojure.pprint :refer (pprint)]
+    [clojure.string :as str]))
diff --git a/tl/package-lock.json b/tl/package-lock.json
new file mode 100644
index 0000000..14eabd5
--- /dev/null
+++ b/tl/package-lock.json
@@ -0,0 +1,273 @@
+{
+	"name": "tl",
+	"lockfileVersion": 3,
+	"requires": true,
+	"packages": {
+		"": {
+			"name": "tl",
+			"dependencies": {
+				"react": "17.0.2",
+				"react-dom": "17.0.2"
+			},
+			"devDependencies": {
+				"shadow-cljs": "3.4.6"
+			}
+		},
+		"node_modules/base64-js": {
+			"version": "1.5.1",
+			"resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+			"integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==",
+			"dev": true,
+			"funding": [
+				{
+					"type": "github",
+					"url": "https://github.com/sponsors/feross"
+				},
+				{
+					"type": "patreon",
+					"url": "https://www.patreon.com/feross"
+				},
+				{
+					"type": "consulting",
+					"url": "https://feross.org/support"
+				}
+			],
+			"license": "MIT"
+		},
+		"node_modules/buffer": {
+			"version": "6.0.3",
+			"resolved": "https://registry.npmjs.org/buffer/-/buffer-6.0.3.tgz",
+			"integrity": "sha512-FTiCpNxtwiZZHEZbcbTIcZjERVICn9yq/pDFkTl95/AxzD1naBctN7YO68riM/gLSDY7sdrMby8hofADYuuqOA==",
+			"dev": true,
+			"funding": [
+				{
+					"type": "github",
+					"url": "https://github.com/sponsors/feross"
+				},
+				{
+					"type": "patreon",
+					"url": "https://www.patreon.com/feross"
+				},
+				{
+					"type": "consulting",
+					"url": "https://feross.org/support"
+				}
+			],
+			"license": "MIT",
+			"dependencies": {
+				"base64-js": "^1.3.1",
+				"ieee754": "^1.2.1"
+			}
+		},
+		"node_modules/buffer-from": {
+			"version": "1.1.2",
+			"resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
+			"integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
+			"dev": true,
+			"license": "MIT"
+		},
+		"node_modules/ieee754": {
+			"version": "1.2.1",
+			"resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz",
+			"integrity": "sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==",
+			"dev": true,
+			"funding": [
+				{
+					"type": "github",
+					"url": "https://github.com/sponsors/feross"
+				},
+				{
+					"type": "patreon",
+					"url": "https://www.patreon.com/feross"
+				},
+				{
+					"type": "consulting",
+					"url": "https://feross.org/support"
+				}
+			],
+			"license": "BSD-3-Clause"
+		},
+		"node_modules/isexe": {
+			"version": "3.1.5",
+			"resolved": "https://registry.npmjs.org/isexe/-/isexe-3.1.5.tgz",
+			"integrity": "sha512-6B3tLtFqtQS4ekarvLVMZ+X+VlvQekbe4taUkf/rhVO3d/h0M2rfARm/pXLcPEsjjMsFgrFgSrhQIxcSVrBz8w==",
+			"dev": true,
+			"license": "BlueOak-1.0.0",
+			"engines": {
+				"node": ">=18"
+			}
+		},
+		"node_modules/js-tokens": {
+			"version": "4.0.0",
+			"resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+			"integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+			"license": "MIT"
+		},
+		"node_modules/loose-envify": {
+			"version": "1.4.0",
+			"resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
+			"integrity": "sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==",
+			"license": "MIT",
+			"dependencies": {
+				"js-tokens": "^3.0.0 || ^4.0.0"
+			},
+			"bin": {
+				"loose-envify": "cli.js"
+			}
+		},
+		"node_modules/object-assign": {
+			"version": "4.1.1",
+			"resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
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+}
diff --git a/tl/package.json b/tl/package.json
new file mode 100644
index 0000000..df70558
--- /dev/null
+++ b/tl/package.json
@@ -0,0 +1,18 @@
+{
+	"name": "tl",
+	"scripts": {
+		"ancient": "clojure -Sdeps '{:deps {com.github.liquidz/antq {:mvn/version \"RELEASE\"}}}' -m antq.core",
+		"dev": "bash dev/dev.sh",
+		"media": "python3 dev/media_server.py",
+		"watch": "npx shadow-cljs watch app",
+		"release": "npx shadow-cljs release app",
+		"build-report": "npx shadow-cljs run shadow.cljs.build-report app target/build-report.html"
+	},
+	"dependencies": {
+		"react": "17.0.2",
+		"react-dom": "17.0.2"
+	},
+	"devDependencies": {
+		"shadow-cljs": "3.4.6"
+	}
+}
diff --git a/tl/resources/public/index.html b/tl/resources/public/index.html
new file mode 100644
index 0000000..f75fb21
--- /dev/null
+++ b/tl/resources/public/index.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset='utf-8'>
+    <meta name="viewport" content="width=device-width,initial-scale=1">
+    <title>tl</title>
+  </head>
+  <body>
+    <noscript>
+      tl is a JavaScript app. Please enable JavaScript to continue.
+    </noscript>
+    <div id="app"></div>
+    <script src="/js/compiled/app.js"></script>
+  </body>
+</html>
diff --git a/tl/resources/public/one_two_three.otio b/tl/resources/public/one_two_three.otio
new file mode 100644
index 0000000..d85ca0e
--- /dev/null
+++ b/tl/resources/public/one_two_three.otio
@@ -0,0 +1,91754 @@
+{
+  "OTIO_SCHEMA": "Timeline.1",
+  "metadata": {
+    "Resolve_OTIO": {
+      "Resolve OTIO Meta Version": "1.0"
+    }
+  },
+  "name": "",
+  "global_start_time": {
+    "OTIO_SCHEMA": "RationalTime.1",
+    "rate": 23.976023976023978,
+    "value": 86400.0
+  },
+  "tracks": {
+    "OTIO_SCHEMA": "Stack.1",
+    "metadata": {},
+    "name": "",
+    "source_range": null,
+    "effects": [],
+    "markers": [
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Keywords": [],
+            "Note": ""
+          }
+        },
+        "name": "Marker 9",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1.0
+          },
+          "start_time": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 798.0
+          }
+        }
+      },
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Keywords": [],
+            "Note": ""
+          }
+        },
+        "name": "ellipsis",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1.0
+          },
+          "start_time": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1067.0
+          }
+        }
+      },
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Keywords": [],
+            "Note": ""
+          }
+        },
+        "name": "Marker 1",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1.0
+          },
+          "start_time": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1299.0
+          }
+        }
+      },
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Keywords": [],
+            "Note": ""
+          }
+        },
+        "name": "Marker 2",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1.0
+          },
+          "start_time": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1807.0
+          }
+        }
+      },
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Keywords": [],
+            "Note": "they feel really far apart at first becuase it's all 1 shot. this 3 shot is showing us how close together they really are. we feel it \"warming up\". what's the action we're cutting on? tashi grabs the beer. i think for the first time, right? double check\n"
+          }
+        },
+        "name": "new master shot here",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1.0
+          },
+          "start_time": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 2618.0
+          }
+        }
+      },
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Keywords": [],
+            "Note": "art and tashi vs art and patrick\nart is the focus for this section so we dont know"
+          }
+        },
+        "name": "pairing #1",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 348.0
+          },
+          "start_time": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 2728.0
+          }
+        }
+      },
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Keywords": [],
+            "Note": ""
+          }
+        },
+        "name": "new escalation",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 130.0
+          },
+          "start_time": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 3086.0
+          }
+        }
+      },
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Keywords": [],
+            "Note": ""
+          }
+        },
+        "name": "Marker 7",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1.0
+          },
+          "start_time": {
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+            "rate": 23.976023976023978,
+            "value": 8005.0
+          }
+        }
+      },
+      {
+        "OTIO_SCHEMA": "Marker.2",
+        "metadata": {
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+            "Keywords": [],
+            "Note": ""
+          }
+        },
+        "name": "ellipsis",
+        "color": "BLUE",
+        "marked_range": {
+          "OTIO_SCHEMA": "TimeRange.1",
+          "duration": {
+            "OTIO_SCHEMA": "RationalTime.1",
+            "rate": 23.976023976023978,
+            "value": 1.0
+          },
+          "start_time": {
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+            "rate": 23.976023976023978,
+            "value": 8385.0
+          }
+        }
+      }
+    ],
+    "enabled": true,
+    "children": [
+      {
+        "OTIO_SCHEMA": "Track.1",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Locked": false
+          }
+        },
+        "name": "Wide \u2014 full court",
+        "source_range": null,
+        "effects": [],
+        "markers": [],
+        "enabled": true,
+        "children": [
+          {
+            "OTIO_SCHEMA": "Clip.2",
+            "metadata": {
+              "Resolve_OTIO": {
+                "Link Group ID": 1
+              }
+            },
+            "name": "Challengers.mov",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 63.0
+              },
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+                "rate": 23.976023976023978,
+                "value": 50641.35864135864
+              }
+            },
+            "effects": [
+              {
+                "OTIO_SCHEMA": "Effect.1",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Display Type": 1,
+                    "Effect Name": "Transform",
+                    "Enabled": true,
+                    "Name": "Transform",
+                    "Parameters": [],
+                    "Type": 2
+                  }
+                },
+                "name": "",
+                "effect_name": "Resolve Effect"
+              },
+              {
+                "OTIO_SCHEMA": "Effect.1",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Display Type": 3,
+                    "Effect Name": "Source Transform",
+                    "Enabled": true,
+                    "Name": "Source Transform",
+                    "Parameters": [],
+                    "Type": 88
+                  }
+                },
+                "name": "",
+                "effect_name": "Resolve Effect"
+              },
+              {
+                "OTIO_SCHEMA": "Effect.1",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Display Type": 3,
+                    "Effect Name": "Immersive Transform",
+                    "Enabled": true,
+                    "Name": "Immersive Transform",
+                    "Parameters": [],
+                    "Type": 85
+                  }
+                },
+                "name": "",
+                "effect_name": "Resolve Effect"
+              },
+              {
+                "OTIO_SCHEMA": "Effect.1",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Display Type": 1,
+                    "Effect Name": "Cropping",
+                    "Enabled": true,
+                    "Name": "Cropping",
+                    "Parameters": [],
+                    "Type": 3
+                  }
+                },
+                "name": "",
+                "effect_name": "Resolve Effect"
+              },
+              {
+                "OTIO_SCHEMA": "Effect.1",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Display Type": 3,
+                    "Effect Name": "Source Cropping",
+                    "Enabled": true,
+                    "Name": "Source Cropping",
+                    "Parameters": [],
+                    "Type": 87
+                  }
+                },
+                "name": "",
+                "effect_name": "Resolve Effect"
+              },
+              {
+                "OTIO_SCHEMA": "Effect.1",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Display Type": 3,
+                    "Effect Name": "Source Looks",
+                    "Enabled": true,
+                    "Name": "Source Looks",
+                    "Parameters": [],
+                    "Type": 90
+                  }
+                },
+                "name": "",
+                "effect_name": "Resolve Effect"
+              },
+              {
+                "OTIO_SCHEMA": "Effect.1",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Display Type": 1,
+                    "Effect Name": "Dynamic Zoom",
+                    "Enabled": false,
+                    "Name": "Dynamic Zoom",
+                    "Parameters": [
+                      {
+                        "Default Parameter Value": [
+                          0.0,
+                          0.0
+                        ],
+                        "Key Frames": {
+                          "0": {
+                            "Value": [
+                              0.0,
+                              0.0
+                            ],
+                            "Variant Type": "POINTF"
+                          },
+                          "1000": {
+                            "Value": [
+                              0.0,
+                              0.0
+                            ],
+                            "Variant Type": "POINTF"
+                          }
+                        },
+                        "Parameter ID": "dynamicZoomCenter",
+                        "Parameter Value": [
+                          0.0,
+                          0.0
+                        ],
+                        "Variant Type": "POINTF"
+                      },
+                      {
+                        "Default Parameter Value": 1.0,
+                        "Key Frames": {
+                          "0": {
+                            "Value": 0.8,
+                            "Variant Type": "Double"
+                          },
+                          "1000": {
+                            "Value": 1.0,
+                            "Variant Type": "Double"
+                          }
+                        },
+                        "Parameter ID": "dynamicZoomScale",
+                        "Parameter Value": 1.0,
+                        "Variant Type": "Double",
+                        "maxValue": 100.0,
+                        "minValue": 0.01
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+                    ],
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+                "effect_name": "Resolve Effect"
+              },
+              {
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+                "metadata": {
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+                    "Effect Name": "Composite",
+                    "Enabled": true,
+                    "Name": "Composite",
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+                "name": "",
+                "effect_name": "Resolve Effect"
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+                    "Effect Name": "Lens Correction",
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+                  }
+                },
+                "name": "",
+                "effect_name": "Resolve Effect"
+              },
+              {
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+                "metadata": {
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+                    "Keywords": [],
+                    "Note": ""
+                  }
+                },
+                "name": "Chapter 01",
+                "color": "BLUE",
+                "marked_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
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+                    "value": 1.0
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+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
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+                  }
+                }
+              }
+            ],
+            "enabled": true,
+            "media_references": {
+              "DEFAULT_MEDIA": {
+                "OTIO_SCHEMA": "ExternalReference.1",
+                "metadata": {},
+                "name": "Challengers.mov",
+                "available_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 477.0
+                  },
+                  "start_time": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 63046.0
+                  }
+                },
+                "available_image_bounds": null,
+                "target_url": "/home/happy/Downloads/Challengers.mov"
+              }
+            },
+            "active_media_reference_key": "DEFAULT_MEDIA"
+          },
+          {
+            "OTIO_SCHEMA": "Clip.2",
+            "metadata": {
+              "Resolve_OTIO": {
+                "Channels": [
+                  {
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+                    "Source Track ID": 5
+                  }
+                ],
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+              }
+            },
+            "name": "Challengers.mov",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
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+                "rate": 23.976023976023978,
+                "value": 366.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 63459.54045954046
+              }
+            },
+            "effects": [],
+            "markers": [
+              {
+                "OTIO_SCHEMA": "Marker.2",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Keywords": [],
+                    "Note": ""
+                  }
+                },
+                "name": "Chapter 01",
+                "color": "BLUE",
+                "marked_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
+                    "value": 1.0
+                  },
+                  "start_time": {
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+                    "rate": 23.976023976023978,
+                    "value": 63459.54045954046
+                  }
+                }
+              }
+            ],
+            "enabled": true,
+            "media_references": {
+              "DEFAULT_MEDIA": {
+                "OTIO_SCHEMA": "ExternalReference.1",
+                "metadata": {},
+                "name": "Challengers.mov",
+                "available_range": {
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+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
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+                  },
+                  "start_time": {
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+                    "rate": 24.0,
+                    "value": 63523.0
+                  }
+                },
+                "available_image_bounds": null,
+                "target_url": "/home/happy/Downloads/Challengers.mov"
+              }
+            },
+            "active_media_reference_key": "DEFAULT_MEDIA"
+          },
+          {
+            "OTIO_SCHEMA": "Clip.2",
+            "metadata": {
+              "Resolve_OTIO": {
+                "Channels": [
+                  {
+                    "Source Channel ID": 0,
+                    "Source Track ID": 5
+                  }
+                ],
+                "Link Group ID": 106
+              }
+            },
+            "name": "Challengers.mov",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 374.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 63826.173826173836
+              }
+            },
+            "effects": [],
+            "markers": [
+              {
+                "OTIO_SCHEMA": "Marker.2",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Keywords": [],
+                    "Note": ""
+                  }
+                },
+                "name": "Chapter 01",
+                "color": "BLUE",
+                "marked_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
+                    "value": 1.0
+                  },
+                  "start_time": {
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+                    "rate": 23.976023976023978,
+                    "value": 63826.173826173836
+                  }
+                }
+              }
+            ],
+            "enabled": true,
+            "media_references": {
+              "DEFAULT_MEDIA": {
+                "OTIO_SCHEMA": "ExternalReference.1",
+                "metadata": {},
+                "name": "Challengers.mov",
+                "available_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 375.0
+                  },
+                  "start_time": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 63890.0
+                  }
+                },
+                "available_image_bounds": null,
+                "target_url": "/home/happy/Downloads/Challengers.mov"
+              }
+            },
+            "active_media_reference_key": "DEFAULT_MEDIA"
+          }
+        ],
+        "kind": "Audio"
+      },
+      {
+        "OTIO_SCHEMA": "Track.1",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Audio Type": "Mono",
+            "Locked": false,
+            "SoloOn": false
+          }
+        },
+        "name": "Audio 8",
+        "source_range": null,
+        "effects": [],
+        "markers": [],
+        "enabled": true,
+        "children": [
+          {
+            "OTIO_SCHEMA": "Gap.1",
+            "metadata": {},
+            "name": "",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 189.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 0.0
+              }
+            },
+            "effects": [],
+            "markers": [],
+            "enabled": true
+          },
+          {
+            "OTIO_SCHEMA": "Clip.2",
+            "metadata": {
+              "Resolve_OTIO": {
+                "Channels": [
+                  {
+                    "Source Channel ID": 0,
+                    "Source Track ID": 4
+                  }
+                ],
+                "Link Group ID": 8
+              }
+            },
+            "name": "Challengers.mov",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 74.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 50833.16683316683
+              }
+            },
+            "effects": [],
+            "markers": [
+              {
+                "OTIO_SCHEMA": "Marker.2",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Keywords": [],
+                    "Note": ""
+                  }
+                },
+                "name": "Chapter 01",
+                "color": "BLUE",
+                "marked_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
+                    "value": 1.0
+                  },
+                  "start_time": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
+                    "value": 50833.16683316683
+                  }
+                }
+              }
+            ],
+            "enabled": true,
+            "media_references": {
+              "DEFAULT_MEDIA": {
+                "OTIO_SCHEMA": "ExternalReference.1",
+                "metadata": {},
+                "name": "Challengers.mov",
+                "available_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 75.0
+                  },
+                  "start_time": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 50884.0
+                  }
+                },
+                "available_image_bounds": null,
+                "target_url": "/home/happy/Downloads/Challengers.mov"
+              }
+            },
+            "active_media_reference_key": "DEFAULT_MEDIA"
+          },
+          {
+            "OTIO_SCHEMA": "Gap.1",
+            "metadata": {},
+            "name": "",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 146.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 0.0
+              }
+            },
+            "effects": [],
+            "markers": [],
+            "enabled": true
+          },
+          {
+            "OTIO_SCHEMA": "Clip.2",
+            "metadata": {
+              "Resolve_OTIO": {
+                "Channels": [
+                  {
+                    "Source Channel ID": 0,
+                    "Source Track ID": 5
+                  }
+                ],
+                "Link Group ID": 4
+              }
+            },
+            "name": "Challengers.mov",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 127.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 51055.94405594406
+              }
+            },
+            "effects": [],
+            "markers": [
+              {
+                "OTIO_SCHEMA": "Marker.2",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Keywords": [],
+                    "Note": ""
+                  }
+                },
+                "name": "Chapter 01",
+                "color": "BLUE",
+                "marked_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
+                    "value": 1.0
+                  },
+                  "start_time": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
+                    "value": 51055.94405594406
+                  }
+                }
+              }
+            ],
+            "enabled": true,
+            "media_references": {
+              "DEFAULT_MEDIA": {
+                "OTIO_SCHEMA": "ExternalReference.1",
+                "metadata": {},
+                "name": "Challengers.mov",
+                "available_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 128.0
+                  },
+                  "start_time": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 51107.0
+                  }
+                },
+                "available_image_bounds": null,
+                "target_url": "/home/happy/Downloads/Challengers.mov"
+              }
+            },
+            "active_media_reference_key": "DEFAULT_MEDIA"
+          },
+          {
+            "OTIO_SCHEMA": "Gap.1",
+            "metadata": {},
+            "name": "",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 12927.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 0.0
+              }
+            },
+            "effects": [],
+            "markers": [],
+            "enabled": true
+          }
+        ],
+        "kind": "Audio"
+      },
+      {
+        "OTIO_SCHEMA": "Track.1",
+        "metadata": {
+          "Resolve_OTIO": {
+            "Audio Type": "Mono",
+            "Locked": false,
+            "SoloOn": false
+          }
+        },
+        "name": "Audio 9",
+        "source_range": null,
+        "effects": [],
+        "markers": [],
+        "enabled": true,
+        "children": [
+          {
+            "OTIO_SCHEMA": "Gap.1",
+            "metadata": {},
+            "name": "",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 189.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 0.0
+              }
+            },
+            "effects": [],
+            "markers": [],
+            "enabled": true
+          },
+          {
+            "OTIO_SCHEMA": "Clip.2",
+            "metadata": {
+              "Resolve_OTIO": {
+                "Channels": [
+                  {
+                    "Source Channel ID": 0,
+                    "Source Track ID": 5
+                  }
+                ],
+                "Link Group ID": 8
+              }
+            },
+            "name": "Challengers.mov",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 74.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 50833.16683316683
+              }
+            },
+            "effects": [],
+            "markers": [
+              {
+                "OTIO_SCHEMA": "Marker.2",
+                "metadata": {
+                  "Resolve_OTIO": {
+                    "Keywords": [],
+                    "Note": ""
+                  }
+                },
+                "name": "Chapter 01",
+                "color": "BLUE",
+                "marked_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
+                    "value": 1.0
+                  },
+                  "start_time": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 23.976023976023978,
+                    "value": 50833.16683316683
+                  }
+                }
+              }
+            ],
+            "enabled": true,
+            "media_references": {
+              "DEFAULT_MEDIA": {
+                "OTIO_SCHEMA": "ExternalReference.1",
+                "metadata": {},
+                "name": "Challengers.mov",
+                "available_range": {
+                  "OTIO_SCHEMA": "TimeRange.1",
+                  "duration": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 75.0
+                  },
+                  "start_time": {
+                    "OTIO_SCHEMA": "RationalTime.1",
+                    "rate": 24.0,
+                    "value": 50884.0
+                  }
+                },
+                "available_image_bounds": null,
+                "target_url": "/home/happy/Downloads/Challengers.mov"
+              }
+            },
+            "active_media_reference_key": "DEFAULT_MEDIA"
+          },
+          {
+            "OTIO_SCHEMA": "Gap.1",
+            "metadata": {},
+            "name": "",
+            "source_range": {
+              "OTIO_SCHEMA": "TimeRange.1",
+              "duration": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 13200.0
+              },
+              "start_time": {
+                "OTIO_SCHEMA": "RationalTime.1",
+                "rate": 23.976023976023978,
+                "value": 0.0
+              }
+            },
+            "effects": [],
+            "markers": [],
+            "enabled": true
+          }
+        ],
+        "kind": "Audio"
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/tl/shadow-cljs.edn b/tl/shadow-cljs.edn
new file mode 100644
index 0000000..532f0bc
--- /dev/null
+++ b/tl/shadow-cljs.edn
@@ -0,0 +1,29 @@
+{:nrepl {:port 8777}
+
+ 
+
+ :source-paths ["src" "test"]
+
+ :dependencies
+ [[reagent "1.2.0"]
+  [re-frame "1.4.7"]
+  [day8.re-frame/http-fx "0.2.4"]
+  [binaryage/devtools "1.0.7"]]
+
+ :dev-http
+ {8280 "resources/public"
+  8290 "target/browser-test"}
+
+ :builds
+ {:app
+  {:target     :browser
+   :output-dir "resources/public/js/compiled"
+   :asset-path "/js/compiled"
+   :modules
+   {:app {:init-fn tl.core/init}}
+   :devtools
+   {:preloads []}
+   :dev
+   {:compiler-options
+    {:closure-defines
+     { }}}}}}
diff --git a/tl/src/tl/config.cljs b/tl/src/tl/config.cljs
new file mode 100644
index 0000000..88055b6
--- /dev/null
+++ b/tl/src/tl/config.cljs
@@ -0,0 +1,4 @@
+(ns tl.config)
+
+(def debug?
+  ^boolean goog.DEBUG)
diff --git a/tl/src/tl/core.cljs b/tl/src/tl/core.cljs
new file mode 100644
index 0000000..a5d94ff
--- /dev/null
+++ b/tl/src/tl/core.cljs
@@ -0,0 +1,26 @@
+(ns tl.core
+  (:require
+   [reagent.dom :as rdom]
+   [re-frame.core :as re-frame]
+   [day8.re-frame.http-fx]   ;; <-- add this
+   [tl.events :as events]
+   [tl.views :as views]
+   [tl.config :as config]
+   ))
+
+
+(defn dev-setup []
+  (when config/debug?
+    (println "dev mode")))
+
+(defn ^:dev/after-load mount-root []
+  (re-frame/clear-subscription-cache!)
+  (let [root-el (.getElementById js/document "app")]
+    (rdom/unmount-component-at-node root-el)
+    (rdom/render [views/main-panel] root-el)))
+
+(defn init []
+  (re-frame/dispatch-sync [::events/initialize-db])
+  (re-frame/dispatch [::events/load-otio])
+  (dev-setup)
+  (mount-root))
diff --git a/tl/src/tl/db.cljs b/tl/src/tl/db.cljs
new file mode 100644
index 0000000..3aef473
--- /dev/null
+++ b/tl/src/tl/db.cljs
@@ -0,0 +1,56 @@
+(ns tl.db)
+
+(def default-db
+  {;; load lifecycle for the OTIO fetch
+   :load {:status :idle               ; :idle | :loading | :ready | :error
+          :error  nil}
+
+   ;; the parsed, immutable-after-load document (tl.otio/parse output)
+   :timeline nil
+
+   ;; Mark-groups: the annotation layer (see tl.marks for the grammar).
+   ;; Clips come from :timeline; these are the user-authored groups + the
+   ;; timeline descriptors. A timeline's :mark-groups says which annotations
+   ;; IT surfaces ("*" | [ids] | {:except #{ids}}); the top of :timeline-stack
+   ;; decides what's currently visible. For now everything is hardcoded.
+   :marks
+   {:timeline-stack [:root]
+    :groups
+    {:root {:type :timeline :name "Sequence" :mark-groups "*"}
+
+     :opening-wides
+     {:type :annotation :name "The opening wides"
+      :marks [:t0-c0 :t1-c0]
+      :content "# The opening wides\n\nWe **establish the geography** before a single face. Two wides, back to back — court, players, the *distance* between them. Everything tightens from here.\n\n- full court\n- baseline"}
+
+     :tashis-face
+     {:type :annotation :name "Tashi's gravity"
+      :marks [:t2-c0 :t2-c1 :t2-c2 :t2-c3 :t2-c4]
+      :content "## Tashi's gravity\n\nThe cut keeps *returning* to her. Five times in the first minute we come back to this **CU** — the edit can't leave her alone, and neither can they."}
+
+     :the-volley
+     {:type :annotation :name "Beat: the volley"
+      :marks [[1831 2660]]
+      :content "## Beat: the volley\n\nTashi → Art → Patrick, **MS**, accelerating. The rhythm of the cutting *is* the rally — shot lengths shrink as the point builds."}
+
+     :the-eyes
+     {:type :annotation :name "Eyes"
+      :marks [:t19-c0 :t20-c0 :t21-c0 :t19-c1 :t20-c1]
+      :content "## Eyes\n\nThree pairs of eyes, intercut. Hers searching, his certain, his afraid. The film **rhymes** them and lets you do the math."}
+
+     :a-spectator
+     {:type :annotation :name "A spectator"
+      :marks [[:at :t11-c0 0]]
+      :content "A spectator, caught for a single frame. *Remember this face.*"}
+
+     :slow-mo
+     {:type :annotation :name "Climax: the serve"
+      :marks [:t30-c0]
+      :content "# Climax: the serve (slow-mo)\n\n3000+ frames on one motion. Time **dilates** at the decisive moment — the cut finally stops cutting and just *watches*."}}}
+
+   ;; transient view state (mutates while scrubbing/zooming)
+   :view {:zoom          50           ; pixels per SECOND (px/frame = zoom/fps)
+          :playhead      0.0          ; frames (media/display coordinate)
+          :playing?      false
+          :seg           0            ; current segment index within the active program
+          :selected-clip nil}})
diff --git a/tl/src/tl/events.cljs b/tl/src/tl/events.cljs
new file mode 100644
index 0000000..a324981
--- /dev/null
+++ b/tl/src/tl/events.cljs
@@ -0,0 +1,73 @@
+(ns tl.events
+  (:require
+   [re-frame.core :as rf]
+   [tl.db :as db]
+   [tl.otio :as otio]
+   [ajax.core :as ajax]))
+
+(rf/reg-event-db
+ ::initialize-db
+ (fn [_ _]
+   db/default-db))
+
+;; --- load + parse ---------------------------------------------------------
+
+(rf/reg-event-fx
+ ::load-otio
+ (fn [{:keys [db]} _]
+   {:db (assoc-in db [:load :status] :loading)
+    :http-xhrio {:method          :get
+                 :uri             "/one_two_three.otio"
+                 :response-format (ajax/json-response-format {:keywords? true})
+                 :on-success      [::otio-loaded]
+                 :on-failure      [::otio-error]}}))
+
+(rf/reg-event-db
+ ::otio-loaded
+ (fn [db [_ raw]]
+   (-> db
+       (assoc :timeline (otio/parse raw))
+       (assoc-in [:load :status] :ready))))
+
+(rf/reg-event-db
+ ::otio-error
+ (fn [db [_ err]]
+   (-> db
+       (assoc-in [:load :status] :error)
+       (assoc-in [:load :error] err))))
+
+;; --- playback ------------------------------------------------------------
+;; The <video> element is the clock (direct 1:1): it pushes its currentTime
+;; (as frames) into :playhead. See tl.views/video-monitor.
+
+(rf/reg-event-db
+ ::set-playhead
+ (fn [db [_ frames]]
+   (assoc-in db [:view :playhead] frames)))
+
+(rf/reg-event-db
+ ::set-playing
+ (fn [db [_ playing?]]
+   (assoc-in db [:view :playing?] playing?)))
+
+;; --- timeline stack (zoom into / out of a mark-group) --------------------
+
+(rf/reg-event-db
+ ::push-timeline
+ (fn [db [_ gid]]
+   (-> db
+       (update-in [:marks :timeline-stack] conj gid)
+       (assoc-in [:view :seg] 0))))
+
+(rf/reg-event-db
+ ::pop-timeline
+ (fn [db _]
+   (-> db
+       (update-in [:marks :timeline-stack] #(if (> (count %) 1) (pop %) %))
+       (assoc-in [:view :seg] 0))))
+
+;; current segment index within the active program (set by the player as it
+;; jumps from span to span)
+(rf/reg-event-db
+ ::set-seg
+ (fn [db [_ i]] (assoc-in db [:view :seg] i)))
diff --git a/tl/src/tl/marks.cljs b/tl/src/tl/marks.cljs
new file mode 100644
index 0000000..078393f
--- /dev/null
+++ b/tl/src/tl/marks.cljs
@@ -0,0 +1,89 @@
+(ns tl.marks
+  "Pure mark resolution: a *mark* resolves to one or more timeline *spans*.
+   No re-frame, no DOM — REPL/test friendly. Canonical unit is FRAMES (see tl.otio).
+
+   Mark grammar (data, not a textual DSL):
+     ref      :t0-c0          ; whole clip (or another mark-group) span
+     instant  1234            ; absolute timeline frame
+              [:at ref i]      ; frame i within a clip; 0-based, -1 = last
+     range    [p1 p2]          ; p = absolute frame OR [:at ref i]
+     marks    [mark ...]       ; a mark-group's ordered list (an EDL / union)
+
+   A *span* is {:start :end :track :clip :instant?} in DISPLAY frames — i.e.
+   media/source frames (position within the .mov), matching :media-in and the
+   <video> clock, which is what the timeline view and playhead use. Absolute
+   frames in marks are interpreted in this same coordinate.")
+
+(defn clip-index
+  "Map of clip-id keyword -> clip, enriched with its track's setup :name + :kind.
+   (tl.otio/parse keeps the setup name on the track, not the clip.)"
+  [timeline]
+  (into {} (for [t (:tracks timeline)
+                 c (:clips t)]
+             [(keyword (:id c)) (assoc c :track (:name t) :kind (:kind t))])))
+
+(defn- ref? [m] (or (keyword? m) (string? m)))
+
+(defn- point
+  "Resolve a point to {:frame :clip}. p is an absolute frame or [:at ref i]."
+  [idx p]
+  (cond
+    (number? p) {:frame p :clip nil}
+
+    (and (vector? p) (= :at (first p)))
+    (let [[_ ref i] p
+          c (idx (keyword ref))]
+      (when-not c (throw (ex-info "unknown clip ref" {:ref ref})))
+      (when-not (number? i) (throw (ex-info "indexed point needs a frame index" {:point p})))
+      (let [local (if (neg? i) (+ (:duration c) i) i)] ; -1 => last frame
+        {:frame (+ (:media-in c) local) :clip c}))
+
+    :else (throw (ex-info "bad point" {:point p}))))
+
+(defn- clip-span [c]
+  {:start (:media-in c)
+   :end   (+ (:media-in c) (:duration c))
+   :track (:track c) :clip c :instant? false})
+
+(declare resolve-marks)
+
+(defn- resolve-mark [idx groups seen m]
+  (cond
+    ;; ref -> a clip span, or recurse into another mark-group
+    (ref? m)
+    (let [k (keyword m)]
+      (cond
+        (idx k)    [(clip-span (idx k))]
+        (groups k) (do (when (seen k)
+                         (throw (ex-info "cycle in mark-groups" {:at k :seen seen})))
+                       (resolve-marks idx groups (conj seen k) (:marks (groups k))))
+        :else (throw (ex-info "unknown ref" {:ref m}))))
+
+    ;; instant: [:at ref i]
+    (and (vector? m) (= :at (first m)))
+    (let [{:keys [frame clip]} (point idx m)]
+      [{:start frame :end frame :track (:track clip) :clip clip :instant? true}])
+
+    ;; range: [p1 p2]
+    (and (vector? m) (= 2 (count m)))
+    (let [a (point idx (first m))
+          b (point idx (second m))]
+      [{:start (:frame a) :end (:frame b)
+        :track (:track (:clip a)) :clip (:clip a) :instant? false}])
+
+    :else (throw (ex-info "bad mark" {:mark m}))))
+
+(defn resolve-marks
+  "Resolve a vector of marks to a flat, ordered vector of spans."
+  [idx groups seen marks]
+  (vec (mapcat #(resolve-mark idx groups seen %) marks)))
+
+(defn resolve-group
+  "Resolve mark-group `gid` (key into `groups`) against clip index `idx`."
+  [idx groups gid]
+  (resolve-marks idx groups #{gid} (:marks (groups gid))))
+
+(defn anchor
+  "Earliest display frame across spans — the scroll/sort anchor. nil if empty."
+  [spans]
+  (when (seq spans) (reduce min (map :start spans))))
diff --git a/tl/src/tl/md.cljs b/tl/src/tl/md.cljs
new file mode 100644
index 0000000..023a2b2
--- /dev/null
+++ b/tl/src/tl/md.cljs
@@ -0,0 +1,59 @@
+(ns tl.md
+  "Tiny Markdown -> Hiccup. Handles the subset commentary needs: ATX headings
+   (#..######), unordered lists (- / *), paragraphs, and inline **bold**,
+   *italic*, `code`. No dependencies, no dangerouslySetInnerHTML."
+  (:require [clojure.string :as str]))
+
+(def ^:private inline-re #"(`[^`]+`|\*\*[^*]+\*\*|\*[^*]+\*)")
+
+(defn- inline
+  "Parse inline markers in a line into a seq of strings / hiccup elements."
+  [s]
+  (loop [s s, acc []]
+    (if-let [m (re-find inline-re s)]
+      (let [tok    (if (vector? m) (first m) m)
+            i      (str/index-of s tok)
+            before (subs s 0 i)
+            after  (subs s (+ i (count tok)))
+            el     (cond
+                     (str/starts-with? tok "`")  [:code (subs tok 1 (dec (count tok)))]
+                     (str/starts-with? tok "**") [:strong (subs tok 2 (- (count tok) 2))]
+                     :else                       [:em (subs tok 1 (dec (count tok)))])]
+        (recur after (conj acc before el)))
+      (conj acc s))))
+
+(defn- flush-para [out para]
+  (if (seq para)
+    (conj out (into [:p {:style {:margin "0 0 8px"}}] (inline (str/join " " para))))
+    out))
+
+(defn render
+  "Markdown string -> a Hiccup [:div ...] tree."
+  [md]
+  (loop [ls (str/split-lines (or md "")), out [], para []]
+    (if (empty? ls)
+      (into [:div] (flush-para out para))
+      (let [t (str/trim (first ls))]
+        (cond
+          (str/blank? t)
+          (recur (rest ls) (flush-para out para) [])
+
+          (re-find #"^#{1,6}\s" t)
+          (let [n   (count (re-find #"^#+" t))
+                txt (str/replace t #"^#+\s*" "")
+                tag (keyword (str "h" (min n 6)))]
+            (recur (rest ls)
+                   (conj (flush-para out para)
+                         (into [tag {:style {:margin "0 0 6px" :lineHeight 1.25}}] (inline txt)))
+                   []))
+
+          (re-find #"^[-*]\s" t)
+          (let [[items more] (split-with #(re-find #"^\s*[-*]\s" %) ls)
+                lis (for [it items]
+                      (into [:li] (inline (str/replace (str/trim it) #"^[-*]\s*" ""))))]
+            (recur more
+                   (conj (flush-para out para) (into [:ul {:style {:margin "0 0 8px 18px" :padding 0}}] lis))
+                   []))
+
+          :else
+          (recur (rest ls) out (conj para t)))))))
diff --git a/tl/src/tl/otio.cljs b/tl/src/tl/otio.cljs
new file mode 100644
index 0000000..e0c5aad
--- /dev/null
+++ b/tl/src/tl/otio.cljs
@@ -0,0 +1,66 @@
+(ns tl.otio
+  "Pure OTIO -> render-ready model. No re-frame, no DOM: easy to test in the REPL.
+
+  Two independent time domains, both normalized to 0 (see CLAUDE design notes):
+    - timeline position : accumulated per track from 0 (global_start_time ignored)
+    - media/source time : every clip shifted by (- media-offset), where
+                          media-offset = min source start across all clips, so the
+                          first referenced frame == frame 0 of the local .mov.
+
+  Canonical unit is FRAMES at :fps. Seconds are derived only when talking to <video>."
+  (:require [clojure.string :as str]))
+
+(defn- clip? [item]
+  (str/starts-with? (:OTIO_SCHEMA item "") "Clip"))
+
+(defn- frames [rational-time]
+  (:value rational-time))
+
+(defn- clip-starts
+  "Source start_time (frames) of every clip across all tracks."
+  [tracks]
+  (for [t tracks
+        c (:children t)
+        :when (clip? c)]
+    (frames (get-in c [:source_range :start_time]))))
+
+(defn- parse-track [media-offset idx track]
+  (loop [pos 0.0
+         items (:children track)
+         ci 0
+         clips (transient [])]
+    (if-let [item (first items)]
+      (let [dur (frames (get-in item [:source_range :duration]))
+            is-clip (clip? item)]
+        (recur (+ pos dur)
+               (rest items)
+               (if is-clip (inc ci) ci)
+               (if is-clip
+                 (conj! clips {:id       (str "t" idx "-c" ci)
+                               :name     (:name item)
+                               :start    pos                              ; timeline frame, 0-based
+                               :duration dur
+                               :media-in (- (frames (get-in item [:source_range :start_time]))
+                                            media-offset)})               ; frame into local .mov
+                 clips)))
+      {:id       idx
+       :index    idx
+       :name     (:name track)
+       :kind     (if (= "Audio" (:kind track)) :audio :video)
+       :duration pos                                                      ; track length, frames
+       :clips    (persistent! clips)})))
+
+(defn parse
+  "OTIO Timeline JSON (keywordized) -> {:fps :media-offset :duration :tracks}."
+  [otio]
+  (let [tracks       (get-in otio [:tracks :children])
+        fps          (get-in otio [:global_start_time :rate] 24)
+        starts       (clip-starts tracks)
+        media-offset (if (seq starts) (apply min starts) 0.0)
+        parsed       (vec (map-indexed (partial parse-track media-offset) tracks))]
+    {:fps          fps
+     :media-offset media-offset
+     :duration     (reduce max 0.0 (for [t parsed
+                                         c (:clips t)]
+                                     (+ (:media-in c) (:duration c))))
+     :tracks       parsed}))
diff --git a/tl/src/tl/subs.cljs b/tl/src/tl/subs.cljs
new file mode 100644
index 0000000..1567f25
--- /dev/null
+++ b/tl/src/tl/subs.cljs
@@ -0,0 +1,94 @@
+(ns tl.subs
+  (:require
+   [re-frame.core :as rf]
+   [tl.marks :as marks]))
+
+(rf/reg-sub ::load-status (fn [db] (get-in db [:load :status])))
+
+(rf/reg-sub ::timeline (fn [db] (:timeline db)))
+(rf/reg-sub ::fps      :<- [::timeline] (fn [t] (:fps t)))
+(rf/reg-sub ::duration :<- [::timeline] (fn [t] (:duration t)))
+(rf/reg-sub ::tracks   :<- [::timeline] (fn [t] (:tracks t)))
+
+;; --- mark-groups / annotations ------------------------------------------
+(rf/reg-sub ::groups         (fn [db] (get-in db [:marks :groups])))
+(rf/reg-sub ::timeline-stack (fn [db] (get-in db [:marks :timeline-stack])))
+(rf/reg-sub ::clip-index :<- [::timeline] (fn [t] (when t (marks/clip-index t))))
+
+(rf/reg-sub
+ ::current-timeline
+ :<- [::groups] :<- [::timeline-stack]
+ (fn [[groups stack] _] (get groups (last stack))))
+
+(defn- admits?
+  "Does a timeline's :mark-groups rule surface annotation `gid`?"
+  [rule gid]
+  (cond
+    (= "*" rule) true
+    (vector? rule) (boolean (some #{gid} rule))
+    (map? rule) (not (contains? (set (:except rule)) gid))
+    :else false))
+
+(rf/reg-sub
+ ::annotations
+ :<- [::groups] :<- [::clip-index] :<- [::current-timeline]
+ (fn [[groups idx cur] _]
+   (when idx
+     (let [rule (:mark-groups cur "*")]
+       (->> groups
+            (filter (fn [[gid g]] (and (= :annotation (:type g)) (admits? rule gid))))
+            (map (fn [[gid g]]
+                   (let [spans (marks/resolve-group idx groups gid)]
+                     {:id gid :name (:name g) :content (:content g)
+                      :spans spans :anchor (marks/anchor spans)
+                      :instant? (every? :instant? spans)})))
+            (sort-by :anchor)
+            vec)))))
+
+;; The annotation the playhead is currently "in" — the latest one whose anchor
+;; we've reached. Drives the commentary scroll + highlight.
+(rf/reg-sub
+ ::active-annotation
+ :<- [::annotations] :<- [::playhead]
+ (fn [[anns ph] _]
+   (:id (or (last (filter #(<= (:anchor %) ph) anns))
+            (first anns)))))
+
+;; --- playback program (the active timeline as an ordered EDL) ------------
+(rf/reg-sub ::current-timeline-id :<- [::timeline-stack] (fn [st] (last st)))
+(rf/reg-sub ::seg (fn [db] (get-in db [:view :seg])))
+
+(defn- ->segments
+  "Lay spans end-to-end in virtual time, tagging each with its virtual offset."
+  [spans]
+  (loop [v 0, ss spans, out []]
+    (if-let [s (first ss)]
+      (let [len (max 1 (- (:end s) (:start s)))]
+        (recur (+ v len) (rest ss)
+               (conj out (assoc s :virt-start v :virt-len len :virt-end (+ v len)))))
+      out)))
+
+;; A program = ordered segments {:start :end (media) :virt-start :virt-len :virt-end :track}.
+;; :root (or any timeline without :marks) plays the whole media linearly as one
+;; segment; a pushed mark-group plays its resolved spans, jumping between them.
+(rf/reg-sub
+ ::program
+ :<- [::current-timeline-id] :<- [::groups] :<- [::clip-index] :<- [::duration]
+ (fn [[gid groups idx dur] _]
+   (cond
+     (nil? dur)
+     {:root? true :id gid :segments [] :virt-len 0}
+
+     (or (= gid :root) (nil? (:marks (get groups gid))))
+     {:root? true :id gid :virt-len dur
+      :segments [{:start 0 :end dur :virt-start 0 :virt-len dur :virt-end dur :track "Sequence"}]}
+
+     :else
+     (let [segs (->segments (marks/resolve-group idx groups gid))]
+       {:root? false :id gid :segments segs
+        :virt-len (reduce + 0 (map :virt-len segs))}))))
+
+;; --- view state (frames in; views multiply by zoom for pixels) ---
+(rf/reg-sub ::zoom     (fn [db] (get-in db [:view :zoom])))      ; px per second
+(rf/reg-sub ::playhead (fn [db] (get-in db [:view :playhead]))) ; frames
+(rf/reg-sub ::playing? (fn [db] (get-in db [:view :playing?])))
diff --git a/tl/src/tl/views.cljs b/tl/src/tl/views.cljs
new file mode 100644
index 0000000..a7e414f
--- /dev/null
+++ b/tl/src/tl/views.cljs
@@ -0,0 +1,335 @@
+(ns tl.views
+  (:require
+   [reagent.core :as r]
+   [re-frame.core :as rf]
+   [tl.subs :as subs]
+   [tl.md :as md]
+   [tl.events :as events]))
+
+(def ^:const row-h 28)
+;; Served by dev/media_server.py (range-capable) rather than shadow's :dev-http,
+;; which doesn't do byte-range serving — Safari/iOS won't play <video> without it.
+;; Host-relative so it works over localhost and Tailscale alike.
+(def media-src
+  (str (.. js/window -location -protocol) "//"
+       (.. js/window -location -hostname) ":8281/challengers_480p.mp4"))
+
+(defonce video-el (atom nil))
+(defonce scroll-el (atom nil))
+(defonce following? (atom true))
+
+(defn- secs [frames fps] (/ frames fps))
+
+(defn- center-on-playhead! [fps zoom playhead]
+  (when-let [el @scroll-el]
+    (let [px     (* (secs playhead fps) zoom)
+          max-sl (max 0 (- (.-scrollWidth el) (.-clientWidth el)))
+          target (-> (- px (/ (.-clientWidth el) 2)) (max 0) (min max-sl))]
+      (set! (.-scrollLeft el) target))))
+
+(defn- seek-to-frame! [fps frames]
+  (when-let [v @video-el]
+    (set! (.-currentTime v) (secs frames fps))))
+
+(defn- toggle-play! []
+  (when-let [v @video-el]
+    (if (.-paused v) (.play v) (.pause v))))   ; play/pause events drive :playing? + rAF
+
+(defn- on-keydown [e]
+  ;; Space toggles play. If the <video> itself is focused, let its native
+  ;; control handle it so we don't double-toggle.
+  (when (and (= "Space" (.-code e))
+             (not= @video-el (.-activeElement js/document)))
+    (.preventDefault e)
+    (toggle-play!)))
+
+(defonce ^:private _kbd
+  (.addEventListener js/document "keydown" on-keydown))
+
+(defn video-monitor
+  "Native-controls <video> that plays the active *program*. A program is an
+  ordered list of source spans; while playing, a rAF loop pushes currentTime
+  (media frames) into :playhead AND, when it reaches the end of the current
+  span, seeks the video to the next span's source frame — so a pushed
+  sub-timeline plays its clips back-to-back, jumping across the source media.
+  :root plays the whole media as one span (unchanged behaviour)."
+  [fps]
+  (let [raf  (atom nil)
+        prog (atom nil)        ; latest program (mirrored from the sub each render)
+        seg  (atom 0)          ; current segment index (hot path)
+        prev (atom :init)      ; previous program id, to detect push/pop
+        seek!  (fn [frame] (when-let [v @video-el]
+                             (set! (.-currentTime v) (secs frame fps))))
+        push!  (fn [] (when-let [v @video-el]
+                        (rf/dispatch [::events/set-playhead (* (.-currentTime v) fps)])))
+        tick (fn tick []
+               (when-let [v @video-el]
+                 (let [segs (:segments @prog)
+                       i    @seg
+                       cur  (get segs i)
+                       mf   (* (.-currentTime v) fps)]
+                   (when cur
+                     (when (>= mf (- (:end cur) 0.5))     ; reached end of this span
+                       (if (< (inc i) (count segs))
+                         (do (reset! seg (inc i))
+                             (rf/dispatch [::events/set-seg (inc i)])
+                             (seek! (:start (get segs (inc i)))))
+                         (when-not (:root? @prog) (.pause v)))) ; end of program
+                     (rf/dispatch [::events/set-playhead mf]))))
+               (reset! raf (js/requestAnimationFrame tick)))
+        stop (fn [] (when @raf (js/cancelAnimationFrame @raf) (reset! raf nil)))]
+    (fn [_fps]
+      (let [program @(rf/subscribe [::subs/program])]
+        (reset! prog program)
+        ;; entered a different timeline: reset to its first span (and try to play)
+        (when (not= (:id program) @prev)
+          (reset! prev (:id program))
+          (reset! seg 0)
+          (when-not (:root? program)
+            (r/after-render
+             (fn []
+               (seek! (:start (first (:segments program))))
+               (when-let [v @video-el] (-> (.play v) (.catch (fn [_]))))))))
+        [:video {:src       media-src
+                 :controls  true
+                 ;; Keep playback inline on iOS instead of jumping to the
+                 ;; native fullscreen player.
+                 :plays-inline      true
+                 :webkit-playsinline "true"
+                 :ref       (fn [node] (reset! video-el node))
+                 :on-play   (fn [_] (reset! following? true)
+                                    (rf/dispatch [::events/set-playing true])  (stop) (tick))
+                 :on-pause  (fn [_] (rf/dispatch [::events/set-playing false]) (stop) (push!))
+                 :on-seeked (fn [_] (push!))
+                 :style {:width 480 :display :block :background "#000"}}]))))
+
+;; --- annotation layer -----------------------------------------------------
+
+(def ^:private ann-colors ["#c2554e" "#4e8fc2" "#5ab07a" "#b08a3a" "#8a5ab0" "#3aa0a0"])
+
+(defn annotation-lane
+  "One labeled row per annotation, drawn above the tracks. Bars are positioned
+  in display frames (same coordinate as clips), so they align with the timeline."
+  [fps zoom annotations active]
+  [:div {:style {:position :relative}}
+   (doall
+    (map-indexed
+     (fn [i {:keys [id name spans] :as _ann}]
+       (let [color (nth ann-colors (mod i (count ann-colors)))
+             on?   (= id active)]
+         ^{:key id}
+         [:div {:style {:position :relative :height 18}}
+          (for [[j s] (map-indexed vector spans)]
+            (let [left (* (secs (:start s) fps) zoom)
+                  w    (* (secs (- (:end s) (:start s)) fps) zoom)]
+              ^{:key j}
+              [:div {:title name
+                     :style {:position :absolute :left left :top 2 :height 14
+                             :width (max 3 w)
+                             :background (if on? color (str color "80"))
+                             :border (str "1px solid " color) :border-radius 2}}]))
+          (when-let [a (some-> spans first :start)]
+            [:div {:style {:position :absolute :left (+ 4 (* (secs a fps) zoom)) :top 1
+                           :font-size 9 :line-height "16px" :color "#eee"
+                           :white-space :nowrap :pointer-events :none
+                           :text-shadow "0 1px 2px #000"}}
+             name])]))
+     annotations))])
+
+(defn commentary
+  "Markdown commentary sidebar. Each annotation is a block anchored to its start
+  frame; the active one is highlighted and scrolled to ~1/3 from the top as the
+  video plays."
+  []
+  (let [el (atom nil)]
+    (fn []
+      (let [anns   @(rf/subscribe [::subs/annotations])
+            active @(rf/subscribe [::subs/active-annotation])]
+        (r/after-render
+         (fn []
+           (when-let [c @el]
+             (when-let [node (and active (.querySelector c (str "#ann-" (name active))))]
+               (set! (.-scrollTop c) (max 0 (- (.-offsetTop node) (/ (.-clientHeight c) 3))))))))
+        [:div {:ref (fn [n] (reset! el n))
+               :style {:position :relative :width 360 :height 270 :overflow-y :auto
+                       :background "#111" :border "1px solid #333" :border-radius 4
+                       :padding "8px 12px" :box-sizing :border-box}}
+         (if (seq anns)
+           (for [{:keys [id content instant?] nm :name} anns]
+             ^{:key id}
+             [:div {:id (str "ann-" (name id))
+                    :style {:padding "8px 10px" :margin-bottom 8 :border-radius 4
+                            :border (if (= id active) "1px solid #3a6ea5" "1px solid transparent")
+                            :background (if (= id active) "#152333" "#161616")}}
+              [:div {:style {:display :flex :align-items :center :justify-content :space-between
+                             :margin-bottom 4}}
+               [:div {:style {:font-size 10 :text-transform :uppercase :letter-spacing 1
+                              :color "#7aa6d6"}} nm]
+               (when-not instant?
+                 [:button {:on-click #(rf/dispatch [::events/push-timeline id])
+                           :title "Play these shots back-to-back"
+                           :style {:background "#1c2a38" :color "#cfe3f5"
+                                   :border "1px solid #3a6ea5" :border-radius 4
+                                   :padding "1px 7px" :cursor :pointer :font-size 10}}
+                  "▶ zoom in"])]
+              [md/render content]])
+           [:div {:style {:color "#666" :font-size 12}} "No annotations."])]))))
+
+;; --- timeline stack: zoom into a mark-group + program strip ---------------
+
+(defn breadcrumb []
+  (let [stack  @(rf/subscribe [::subs/timeline-stack])
+        groups @(rf/subscribe [::subs/groups])]
+    [:div {:style {:display :flex :align-items :center :gap 8 :margin-bottom 8
+                   :font-size 12 :min-height 24}}
+     (when (> (count stack) 1)
+       [:button {:on-click #(rf/dispatch [::events/pop-timeline])
+                 :style {:background "#222" :color "#cfe3f5" :border "1px solid #3a6ea5"
+                         :border-radius 4 :padding "2px 8px" :cursor :pointer :font-size 11}}
+        "← back"])
+     (into [:div {:style {:display :flex :gap 6 :align-items :center}}]
+           (map-indexed
+            (fn [i gid]
+              ^{:key i}
+              [:span (when (pos? i) {})
+               (when (pos? i) [:span {:style {:color "#555" :margin-right 6}} "›"])
+               [:span {:style {:color (if (= gid (last stack)) "#cfe3f5" "#888")}}
+                (get-in groups [gid :name] (name gid))]])
+            stack))]))
+
+(defn program-strip
+  "Contiguous view of the active sub-timeline: each source span laid end-to-end
+  in virtual time, current span highlighted, smooth virtual playhead."
+  []
+  (let [program  @(rf/subscribe [::subs/program])
+        seg      @(rf/subscribe [::subs/seg])
+        playhead @(rf/subscribe [::subs/playhead])]
+    (when-not (:root? program)
+      (let [segs (:segments program)
+            vlen (max 1 (:virt-len program))
+            w    852
+            sc   (/ w vlen)
+            cur  (get segs seg)
+            vp   (when cur (+ (:virt-start cur) (- playhead (:start cur))))]
+        [:div {:style {:position :relative :width w :height 34 :margin-bottom 12
+                       :background "#111" :border "1px solid #333" :border-radius 4
+                       :overflow :hidden}}
+         (for [[i s] (map-indexed vector segs)]
+           ^{:key i}
+           [:div {:style {:position :absolute :top 0 :bottom 0
+                          :left (* (:virt-start s) sc)
+                          :width (max 1 (- (* (:virt-len s) sc) 1))
+                          :background (if (= i seg) "#2a4a6a" "#1c2a38")
+                          :box-sizing :border-box :overflow :hidden
+                          :font-size 9 :color "#bcd" :padding "3px 4px" :white-space :nowrap}}
+            (:track s)])
+         (when vp
+           [:div {:style {:position :absolute :top 0 :bottom 0 :left (* vp sc)
+                          :width 2 :background "#e33" :pointer-events :none}}])]))))
+
+(defn clip-block [fps zoom {:keys [name media-in duration] :as _clip}]
+  (let [left  (* (secs media-in fps) zoom)
+        width (max 1 (* (secs duration fps) zoom))]
+    [:div {:style {:position :absolute :left left :top 1
+                   :width width :height (- row-h 2)
+                   :box-sizing :border-box :overflow :hidden
+                   :background "#3a6ea5" :border "1px solid #16324f"
+                   :border-radius 2 :font-size 10 :line-height "26px"
+                   :color "#cfe3f5" :white-space :nowrap :padding-left 3}}
+     name]))
+
+(defn track-row [fps zoom track]
+  [:div {:style {:position :relative :height row-h
+                 :background (if (= :audio (:kind track)) "#161616" "#1c1c1c")
+                 :border-bottom "1px solid #2a2a2a"}}
+   (for [c (:clips track)]
+     ^{:key (:id c)} [clip-block fps zoom c])])
+
+(defn- ev->frames
+  "Pointer clientX -> clamped timeline frame, relative to the content div
+  (whose bounding rect already accounts for horizontal scroll)."
+  [content clientX zoom fps duration]
+  (let [px     (- clientX (.-left (.getBoundingClientRect content)))
+        frames (* (/ px zoom) fps)]
+    (-> frames (max 0) (min duration))))
+
+(defn- begin-scrub!
+  "mousedown on the timeline: seek to the click, then follow the mouse (even
+  outside the element) until mouseup."
+  [content zoom fps duration ev]
+  (.preventDefault ev)
+  (let [to (fn [clientX]
+             (let [f (ev->frames content clientX zoom fps duration)]
+               (rf/dispatch [::events/set-playhead f])   ; move the red line now
+               (seek-to-frame! fps f)))                  ; and seek the video
+        move (fn [e] (to (.-clientX e)))
+        up   (fn up [_]
+               (.removeEventListener js/document "mousemove" move)
+               (.removeEventListener js/document "mouseup" up))]
+    (to (.-clientX ev))
+    (.addEventListener js/document "mousemove" move)
+    (.addEventListener js/document "mouseup" up)))
+
+(def ^:private gutter-w 150)
+
+(defn timeline []
+  (let [content (atom nil)]
+    (fn []
+      (let [fps      @(rf/subscribe [::subs/fps])
+            zoom     @(rf/subscribe [::subs/zoom])
+            duration @(rf/subscribe [::subs/duration])
+            tracks   @(rf/subscribe [::subs/tracks])
+            playhead @(rf/subscribe [::subs/playhead])
+            playing? @(rf/subscribe [::subs/playing?])
+            anns     @(rf/subscribe [::subs/annotations])
+            active   @(rf/subscribe [::subs/active-annotation])
+            vtracks  (filter #(= :video (:kind %)) tracks)  ; audio hidden
+            lane-h   (* 18 (count anns))
+            width    (* (secs duration fps) zoom)]
+        (when (and playing? @following?)
+          (r/after-render #(center-on-playhead! fps zoom playhead)))
+        [:div {:style {:display :flex :align-items :flex-start
+                       :border "1px solid #333" :background "#111"}}
+         ;; fixed left gutter: setup (track) names, always visible
+         [:div {:style {:flex-shrink 0 :width gutter-w :user-select :none}}
+          [:div {:style {:height lane-h}}]   ; spacer aligning labels with rows
+          (for [t vtracks]
+            ^{:key (:id t)}
+            [:div {:style {:height row-h :box-sizing :border-box
+                           :border-bottom "1px solid #2a2a2a" :border-right "1px solid #2a2a2a"
+                           :padding "0 6px" :font-size 10 :line-height (str (dec row-h) "px")
+                           :color "#9ab" :background "#141414"
+                           :white-space :nowrap :overflow :hidden :text-overflow :ellipsis}}
+             (:name t)])]
+         ;; horizontally-scrolling timeline
+         [:div {:ref (fn [n] (reset! scroll-el n))
+                :on-wheel (fn [_] (reset! following? false))
+                :style {:overflow-x :auto :flex 1}}
+          [:div {:ref (fn [n] (reset! content n))
+                 :on-mouse-down (fn [e] (begin-scrub! @content zoom fps duration e))
+                 :style {:position :relative :width width :cursor "ew-resize"}}
+           ;; playhead: line spanning all rows + a grab handle at the top
+           (let [x (* (secs playhead fps) zoom)]
+             [:div {:style {:position :absolute :top 0 :bottom 0 :left x
+                            :width 2 :background "#e33" :z-index 10
+                            :pointer-events "none"}}
+              [:div {:style {:position :absolute :top 0 :left -5 :width 12 :height 10
+                             :background "#e33" :border-radius 2}}]])
+           [annotation-lane fps zoom anns active]
+           (for [t vtracks]
+             ^{:key (:id t)} [track-row fps zoom t])]]]))))
+
+(defn main-panel []
+  (let [status @(rf/subscribe [::subs/load-status])
+        fps    (or @(rf/subscribe [::subs/fps]) (/ 24000 1001))]
+    [:div {:style {:font-family "sans-serif" :background "#0c0c0c"
+                   :color "#ddd" :min-height "100vh" :padding 12}}
+     [breadcrumb]
+     [program-strip]
+     [:div {:style {:display :flex :gap 12 :align-items :flex-start :margin-bottom 12}}
+      [video-monitor fps]
+      [commentary]]
+     (case status
+       :ready [timeline]
+       :error [:div {:style {:color "#e66"}} "Failed to load OTIO"]
+       [:div "Loading timeline…"])]))