fix: close the gaps the review of the trial-5 fixes found

- park-attempt-files: parks in the git dir (outside the work tree, so Sub-step C.2 never registers a parked file again), reads a path with a space, names a new file under a header it cannot read, parks a symlink, never overwrites a parked file, and exits 1 while a file the attempt made is still in the tree; the upward diff is saved in one form whatever the git config.

- brief-validator: BRIEF_SC_NOT_RUNNABLE only when a later backticked span is a command; a criterion that only names a flag or a path stays prose (Handover 1 says so now).

- review ids: counted over the final list (runContract), as fill-finding-ids counts review.md; trimmed_count matches rows by id; engine-findings and fidelity-diff use computeFindingIds; the --workflow dedup keeps one source's different findings apart, the decision-23 put-back stays one copy per triplet.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/HANDOVER-CONTRACTS.md

@@ -100,7 +100,7 @@ Optional but standard sections: `## Non-Goals`, `## Constraints`, `## Preference
 | **v5.1 sequencing gate** | every read | `brief_version ≥ 2.1` requires `phase_signals` (list) OR `phase_signals_partial: true` — error `BRIEF_V51_MISSING_SIGNALS` on miss. Validator-only enforcement; commands surface, don't re-enforce. |
 | **v5.5 framing gate** | every read | `framing` enum-checked on any version when present (`BRIEF_INVALID_FRAMING`); at `brief_version ≥ 2.2` a missing `framing` → `BRIEF_MISSING_FRAMING` and a missing `## TL;DR` → `BRIEF_MISSING_SECTION` (strict) / warning (soft). `trekreview` briefs are exempt. |
 | Body sections | strict only | All `BRIEF_BODY_SECTIONS` present (`## TL;DR` added at ≥ 2.2) |
-| Runnable criteria | every read | A `## Success Criteria` bullet whose first backticked span is a command the review's criteria runner never runs (the product's own binary, `jq`, `grep`, a pipe) → warning `BRIEF_SC_NOT_RUNNABLE`, never an error: a criterion a human judges stays allowed. Prose-only criteria are not flagged. `trekreview` briefs are exempt. No schema change. Indented sub-bullets belong to the criterion above them (counted, never criteria of their own); a criterion with sub-points and no command → warning `BRIEF_SC_SUBPOINTS`. A brief whose Constraints or NFRs require bash 3.2 and a criterion that runs plain `bash` → warning `BRIEF_SC_BASH_NOT_PINNED` (use `/bin/bash`). |
+| Runnable criteria | every read | A `## Success Criteria` bullet whose first backticked span is a command the review's criteria runner never runs (the product's own binary, `jq`, `grep`, a pipe), or whose first span is not a command while a later span is one (the runner reads only the first, voyage-lekerepo trial 5) → warning `BRIEF_SC_NOT_RUNNABLE`, never an error: a criterion a human judges stays allowed. Prose-only criteria, also those that only name a flag or a path, are not flagged. `trekreview` briefs are exempt. No schema change. Indented sub-bullets belong to the criterion above them (counted, never criteria of their own); a criterion with sub-points and no command → warning `BRIEF_SC_SUBPOINTS`. A brief whose Constraints or NFRs require bash 3.2 and a criterion that runs plain `bash` → warning `BRIEF_SC_BASH_NOT_PINNED` (use `/bin/bash`). |
 
 **State machine** detail: a brief that says it has research topics but skipped them must explicitly admit it (via `brief_quality: partial`). This is the most common failure mode the validator catches.