Vendor libs/hump, sfxrlua, json4lua, narrator as real files

These were committed as empty submodule gitlinks with no .gitmodules,
so the folders were never populated and the game could not load
(require of libs/hump/timer, libs/sfxrlua/sfxr, narrator.narrator).
Checked out each at its pinned commit and vendored the files, matching
the existing bundled-libs convention. Removed the junk libs/libs/ tree.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

libs/narrator/test/units/nesting/1-1-1-1.txt

@@ -0,0 +1,28 @@
+I looked at Monsieur Fogg
+
+>) ... and I could contain myself no longer.
+2) ... but I said nothing
+
+... and I could contain myself no longer.
+'What is the purpose of our journey, Monsieur?'
+'A wager,' he replied.
+
+>) 'A wager!'
+2) 'Ah.'
+
+'A wager!' I returned.
+He nodded.
+
+>) 'But surely that is foolishness!'
+2) 'A most serious matter then!'
+
+'But surely that is foolishness!'
+He nodded again.
+
+>) 'But can we win?'
+2) 'A modest wager, I trust?'
+3) I asked nothing further of him then.
+
+'But can we win?'
+'That is what we will endeavour to find out,' he answered.
+After that, we passed the day in silence.

libs/narrator/test/units/nesting/1-1-1-2.txt

@@ -0,0 +1,28 @@
+I looked at Monsieur Fogg
+
+>) ... and I could contain myself no longer.
+2) ... but I said nothing
+
+... and I could contain myself no longer.
+'What is the purpose of our journey, Monsieur?'
+'A wager,' he replied.
+
+>) 'A wager!'
+2) 'Ah.'
+
+'A wager!' I returned.
+He nodded.
+
+>) 'But surely that is foolishness!'
+2) 'A most serious matter then!'
+
+'But surely that is foolishness!'
+He nodded again.
+
+1) 'But can we win?'
+>) 'A modest wager, I trust?'
+3) I asked nothing further of him then.
+
+'A modest wager, I trust?'
+'Twenty thousand pounds,' he replied, quite flatly.
+After that, we passed the day in silence.

libs/narrator/test/units/nesting/1-1-1-3.txt

@@ -0,0 +1,26 @@
+I looked at Monsieur Fogg
+
+>) ... and I could contain myself no longer.
+2) ... but I said nothing
+
+... and I could contain myself no longer.
+'What is the purpose of our journey, Monsieur?'
+'A wager,' he replied.
+
+>) 'A wager!'
+2) 'Ah.'
+
+'A wager!' I returned.
+He nodded.
+
+>) 'But surely that is foolishness!'
+2) 'A most serious matter then!'
+
+'But surely that is foolishness!'
+He nodded again.
+
+1) 'But can we win?'
+2) 'A modest wager, I trust?'
+>) I asked nothing further of him then.
+
+I asked nothing further of him then, and after a final, polite cough, he offered nothing more to me. After that, we passed the day in silence.

libs/narrator/test/units/nesting/1-1-2-1.txt

@@ -0,0 +1,28 @@
+I looked at Monsieur Fogg
+
+>) ... and I could contain myself no longer.
+2) ... but I said nothing
+
+... and I could contain myself no longer.
+'What is the purpose of our journey, Monsieur?'
+'A wager,' he replied.
+
+>) 'A wager!'
+2) 'Ah.'
+
+'A wager!' I returned.
+He nodded.
+
+1) 'But surely that is foolishness!'
+>) 'A most serious matter then!'
+
+'A most serious matter then!'
+He nodded again.
+
+>) 'But can we win?'
+2) 'A modest wager, I trust?'
+3) I asked nothing further of him then.
+
+'But can we win?'
+'That is what we will endeavour to find out,' he answered.
+After that, we passed the day in silence.

libs/narrator/test/units/nesting/1-1-2-2.txt

@@ -0,0 +1,28 @@
+I looked at Monsieur Fogg
+
+>) ... and I could contain myself no longer.
+2) ... but I said nothing
+
+... and I could contain myself no longer.
+'What is the purpose of our journey, Monsieur?'
+'A wager,' he replied.
+
+>) 'A wager!'
+2) 'Ah.'
+
+'A wager!' I returned.
+He nodded.
+
+1) 'But surely that is foolishness!'
+>) 'A most serious matter then!'
+
+'A most serious matter then!'
+He nodded again.
+
+1) 'But can we win?'
+>) 'A modest wager, I trust?'
+3) I asked nothing further of him then.
+
+'A modest wager, I trust?'
+'Twenty thousand pounds,' he replied, quite flatly.
+After that, we passed the day in silence.

libs/narrator/test/units/nesting/1-1-2-3.txt

@@ -0,0 +1,26 @@
+I looked at Monsieur Fogg
+
+>) ... and I could contain myself no longer.
+2) ... but I said nothing
+
+... and I could contain myself no longer.
+'What is the purpose of our journey, Monsieur?'
+'A wager,' he replied.
+
+>) 'A wager!'
+2) 'Ah.'
+
+'A wager!' I returned.
+He nodded.
+
+1) 'But surely that is foolishness!'
+>) 'A most serious matter then!'
+
+'A most serious matter then!'
+He nodded again.
+
+1) 'But can we win?'
+2) 'A modest wager, I trust?'
+>) I asked nothing further of him then.
+
+I asked nothing further of him then, and after a final, polite cough, he offered nothing more to me. After that, we passed the day in silence.

libs/narrator/test/units/nesting/1-2.txt

@@ -0,0 +1,14 @@
+I looked at Monsieur Fogg
+
+>) ... and I could contain myself no longer.
+2) ... but I said nothing
+
+... and I could contain myself no longer.
+'What is the purpose of our journey, Monsieur?'
+'A wager,' he replied.
+
+1) 'A wager!'
+>) 'Ah.'
+
+'Ah,' I replied, uncertain what I thought.
+After that, we passed the day in silence.

libs/narrator/test/units/nesting/2.txt

@@ -0,0 +1,6 @@
+I looked at Monsieur Fogg
+
+1) ... and I could contain myself no longer.
+>) ... but I said nothing
+
+... but I said nothing and we passed the day in silence.