Loki Mode v7.70.0

Deep bug-hunt sweep (wave-11): cross-route trust guards + fail-closed healing gate + 6 more

A 12-agent file-sharded verify-then-fix hunt covering the deferred cross-file
follow-ups from wave-10 plus fresh surfaces. Every finding reproduced before
fixing; STALE findings refuted with evidence (the rarv/autonomous/state Bun
runner was hunted and found parity-correct, no changes). Council 3/3; local-ci
84/84 (now including a dist-freshness gate); bun 1093, python 1337.

Trust surfaces:

• Override stub-judge artifact check (BOTH routes): the deterministic override
  judge (used when the LLM judge panel is unavailable) approved an override
  purely on a trusted proofType, never checking evidence.artifacts. So
  counter-evidence with a trusted proofType but empty/whitespace-only/forged
  artifacts lifted a BLOCK with zero real verification. Both the Bun
  quality_gates.ts path and the live loki internal phase1-hooks override path
  (internal_phase1.ts) now require at least one non-empty artifact before a
  trusted proofType yields APPROVE_OVERRIDE; empty -> the BLOCK stays.
• Healing friction gate (bash): hook_pre_healing_modify, whose job is to BLOCK
  removal of unclassified business-rule friction, failed OPEN on a corrupt or
  empty friction-map.json (the python check ended with || echo "OK"). It now
  fails closed (BLOCK) on a parse error, matching every sibling gate in the file.

Provider cost ceiling:

• LOKI_MAX_TIER is now honored case-insensitively for the Codex provider on both
  routes (providers/codex.sh resolve_model_for_tier and providers.ts
  applyCodexMaxTier). Previously a mixed-case or whitespace value ("Haiku",
  " haiku ") capped Claude but fell through to the default on Codex, silently
  bypassing the cost ceiling. Normalization mirrors the Claude precedent exactly.

PRD reuse:

• Persisting a user PRD that contains non-ASCII characters (smart quotes,
  accents, CJK, emoji) no longer corrupts it: the persist did a lossy latin1
  round-trip (toString("binary") then utf8 write), which also made the next
  same-spec run misclassify the PRD as hand-edited. Now a byte-exact rename.

Memory:

• Progressive-disclosure Layer-3 gate now uses the keyword-boosted effective
  score (not the un-boosted stored relevance), so the topics most relevant to
  the query are actually loaded into full detail (sibling of the WT9 fix); plus
  a dead local removed.

Honesty:

• The Aider provider now discloses its no-parallel limitation in its degraded
  reasons; a misleading Claude max-tier comment was corrected (behavior
  unchanged, parity-locked).

CI

• local-ci now gates dist freshness: it rebuilds loki-ts/dist/loki.js and
  asserts the committed bundle matches a fresh build (ignoring the per-build
  debugId line), so a forgotten rebuild can no longer ship stale runtime
  behavior (the class that affected v7.68.0 and was caught in v7.69.0 review).