fix(v0.3.1): sated bot stops chasing food + perf-leak + fuzzy improvement dedup

Third day of "bot just walks back and forth burning tokens". Root
causes were mechanical, not the manifesto:

1. SATED BOT CHASING FOOD (the big one)
   Bot had food=17 (nearly full) but storyline first_food + manifesto
   L1 required 2+ food ITEMS in inventory, so it looped scout-food /
   acquire-food for hours instead of working. Now both treat a hunger
   bar >= 14 (SATED_FOOD) as satisfied even with empty food inventory —
   a full bot chops wood / makes tools and grabs food opportunistically,
   only hard-pursuing food when actually hungry (< 14).
   manifesto/needs.js foodDetect + goal/storyline.js first_food.completed.

2. perf_hooks MEMORY LEAK (overnight OOM suspect)
   "MaxPerformanceEntryBufferExceededWarning: 1,000,001 measure entries".
   mineflayer/pathfinder emit perf marks we never consume. Added a
   60s reaper in bot.js (performance.clearMeasures/clearMarks). unref'd.

3. IMPROVEMENT QUEUE SELF-DUPLICATING
   The LLM re-filed closed gaps with reworded titles (#5/#8/#9 were
   dupes of implemented #1/#2/#3). Exact-title dedup missed them.
   Replaced with token-set fuzzy match (isDuplicateTitle): jaccard>=0.75
   OR >=3 shared meaningful tokens with jaccard>=0.5. Also: a re-filed
   gap that's already implemented/rejected is NOT resurrected as a new
   open row. Cleared all 5 open requests (now genuinely implemented).

Also confirmed (no change needed):
- canDig=true is a DELIBERATE codebase-wide choice ("without it the bot
  gets permanently stuck", actions.js). The stale memory recommending
  canDig=false is updated. ViaBackwards dig works partially (dug:1
  moved:1.8 observed); false would trap the bot in every pit.
- scout-food already has blind/tunnel fallback + 12s step timeout
  (operator's earlier edits) so trapped-pathfinder degrades instead of
  hanging 30s.

Tests: 407 green (was 404). Updated needs/state/storyline tests for the
SATED_FOOD threshold; added fuzzy-dedup + tokenize/jaccard tests.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

runtime/manifesto/needs.js

@@ -122,9 +122,18 @@ function alivePursue(s) {
 	return null;
 }
 
+// SATED_FOOD — above this hunger level the bot is NOT hungry; chasing
+// food (scout/acquire) is wasted motion. The bot should keep working
+// toward wood/tools/shelter and pick up food opportunistically. It
+// only becomes a hard need again when the bar drops below this.
+const SATED_FOOD = 14;
+
 function foodDetect(s) {
 	if (!s?.connected) return true;
-	if ((s.food ?? 20) >= 18 && countAny(s.inventory, FOOD_ITEMS) >= 1) return true;
+	// Comfortable hunger bar → treat L1 as satisfied even with an empty
+	// food inventory. (Was: required 6+ food items, which made a sated
+	// bot loop scout/acquire-food for hours doing nothing else.)
+	if ((s.food ?? 20) >= SATED_FOOD) return true;
 	return countAny(s.inventory, FOOD_ITEMS) >= 6;
 }
 

runtime/manifesto/state.test.js

@@ -33,13 +33,19 @@ test("pickActiveNeed: fresh spawn → L0 alive if zero food", () => {
 	assert.equal(a.skillId, "survive.scout-food");
 });
 
-test("pickActiveNeed: hp ok, no food in inventory → L1 food (scout)", () => {
+test("pickActiveNeed: hungry (food<14), no food in inventory → L1 food (scout)", () => {
 	_resetForTest();
-	const a = pickActiveNeed(snap());
+	const a = pickActiveNeed(snap({ food: 8 }));
 	assert.equal(a.need.id, "food");
 	assert.equal(a.skillId, "survive.scout-food");
 });
 
+test("pickActiveNeed: sated (food=20) + empty inventory → skips L1, goes to L2 tools_wood", () => {
+	_resetForTest();
+	const a = pickActiveNeed(snap());
+	assert.equal(a.need.id, "tools_wood", "sated bot works toward tools, not chasing food");
+});
+
 test("pickActiveNeed: food covered → L2 tools_wood (gather logs)", () => {
 	_resetForTest();
 	const a = pickActiveNeed(snap({ inventory: { bread: 8 } }));
@@ -103,7 +109,7 @@ test("pickActiveNeed: hostile imminent + low HP → L0 takes over", () => {
 
 test("describeActiveNeed: returns 'L<n> <id> → <skill>'", () => {
 	_resetForTest();
-	const s = describeActiveNeed(snap());
+	const s = describeActiveNeed(snap({ food: 8 }));
 	assert.match(s, /^L1 food → /);
 });