v0.2.0-rc.2: P0 hardening — Pi headless, test state isolation, advice fixes

P0 (correctness):

1. PEPA_HEADLESS=1 guard in extensions/mineflayer-bridge.ts. When `pi -p`
   spawns a subprocess (banter, coach, planner, reflect, auto-patch), the
   bridge no longer attempts a second MC connect — the hybrid runtime
   already owns the nickname. runtime/pi-bridge.js sets the env var on
   every spawn. Root cause of the "two pepa_bot's racing for the slot"
   bug seen in reply-pi stderr.

2. Test state isolation in runtime/config.js. When running under the node
   test runner (detected via execArgv/argv) — or when PEPA_STATE_DIR is
   set — stateDir redirects to /tmp/pepa-test-state-<pid>/. log.js,
   scenario-memory, world-journal, and knowledge.db all follow.
   `npm test` no longer pollutes live scenarios.jsonl, world-journal.jsonl,
   or daily log files. Verified empirically: post-fix run added 0 test
   rows to the live scenarios file. Cleaned ~550 historical test rows
   from live state in the same change.

3. defendReflex outcome reporting (runtime/reflex.js). Previously a
   creeper-rule override marked the lesson succeeded=false BEFORE the
   flee skill returned. Now dispatchDefendFlee accepts {lessonId} and
   the onComplete fires reportAdviceOutcome with the actual flee result.

4. Mode-name → skill-id translation in runtime/coach/advice.js. Pi-coach
   occasionally returns prefer_skill values that are mode names
   ("night_shelter", "self_preservation", "hunger"). normalisePreferSkill
   maps these to SAFE_OVERRIDES entries before dispatch. Also handles
   "tunnel-out", "survive_flee", "survive flee" shapes.

New behavior:

5. Self-reflection loop (runtime/coach/reflect.js). Every 30 min, the
   bot asks Pi: "Are you making progress, or stuck in a loop? What
   should you do differently?" Pi answers with a verdict
   (progress/loop/recovering/idle/emergency), summary, next-action, and
   0-N new lessons. The reflection is written to
   state/<host>/reflections/<ts>.md and lessons land in the DB with
   source="pi-reflect". Rate-limited to 2 calls/hour. Wired through
   bot.js with the existing askPi + lastSnapshot accessor.

Tests: 246/246 green (+9 new: 6 advice mode-name + 4 reflect).

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pepa-pi-bot",
-  "version": "0.2.0-rc.1",
+  "version": "0.2.0-rc.2",
   "private": true,
   "description": "An autonomous, self-extending Minecraft player powered by Pi and Mineflayer.",
   "license": "MIT",
@@ -16,7 +16,7 @@
     "tui": "tsx tui/tui.tsx",
     "propose:apply": "node scripts/propose-apply.js",
     "stop": "bash scripts/stop.sh",
-    "test": "node --test runtime/skills/contract.test.js runtime/skills/groups.test.js runtime/skills/compat.test.js runtime/skills/recovery-tunnel-out.test.js runtime/curriculum.test.js runtime/social/social.test.js runtime/social/conversation.test.js runtime/social/chat-history.test.js runtime/social/reply-pi.test.js runtime/stuck-incident.test.js runtime/compat.test.js runtime/reflex.test.js runtime/base-site.test.js runtime/locations.test.js runtime/watch-filter.test.js runtime/world-journal.test.js runtime/scenario-memory.test.js runtime/critic.test.js runtime/skill-library.test.js runtime/modes.test.js runtime/pathfinder-watchdog.test.js runtime/knowledge/knowledge.test.js runtime/coach/postmortem.test.js runtime/coach/advice.test.js runtime/persona/chatter.test.js scripts/edit-scope.test.js scripts/lint-patch.test.js"
+    "test": "node --test runtime/skills/contract.test.js runtime/skills/groups.test.js runtime/skills/compat.test.js runtime/skills/recovery-tunnel-out.test.js runtime/curriculum.test.js runtime/social/social.test.js runtime/social/conversation.test.js runtime/social/chat-history.test.js runtime/social/reply-pi.test.js runtime/stuck-incident.test.js runtime/compat.test.js runtime/reflex.test.js runtime/base-site.test.js runtime/locations.test.js runtime/watch-filter.test.js runtime/world-journal.test.js runtime/scenario-memory.test.js runtime/critic.test.js runtime/skill-library.test.js runtime/modes.test.js runtime/pathfinder-watchdog.test.js runtime/knowledge/knowledge.test.js runtime/coach/postmortem.test.js runtime/coach/advice.test.js runtime/coach/reflect.test.js runtime/persona/chatter.test.js scripts/edit-scope.test.js scripts/lint-patch.test.js"
   },
   "dependencies": {
     "better-sqlite3": "^11.10.0",