[MatheusCastro99]

Closes #160. Harness sync for ProdHarnessConfig D26 (from 9d6087f, ProdHarnessConfig#7), from the meta-analysis in Evidence/research/13. Harness files, .claude/CLAUDE.md and project skills only: no app code changes.

Changes

• G2 fixes go to the forked builder (E1). After G2, review makes typo and one-line doc fixes itself; anything else becomes a G2 fixes sub-phase built by build <n> amend on Sonnet, followed by one narrow re-review.
• Auto-fix stays off (E2). set_monitor is allowed in settings.json; review turns Auto-fix off after each push and before the ready-to-merge note.
• An Epic's close is one sequence (E3): the audit, a docs pass with its findings, then the cleanup. close.cjs exits 4 when there's nothing to clean up, and takes the current branch only when it's the issue's.
• The handoff checks each required CI job by name (E5) (handoff-check --verify-head), and the build checks what it posts for details the plan says never to quote.
• A read-only ui-check agent (new, .claude/agents/ui-check.md) runs the UI check in review (E7), outside the builder's context.
• The Stop gate reads .harness/work/<n>/known-failures.md (E9): a failure you send to an open issue at G2 is reported, not blocked. It fails closed on anything it can't recognise.
• scope (E4, E6, E8, E10, E11, C6): drafting before /scope, deferred items and new rules planned, fewer questions, a warning when the checkout is stale, the surveyor only for unfamiliar code.
• Former trials: T1, T4, T6 and T7 are standing rules; T5 (security-review) is dropped.
• Refactor: the installed files point at ProdHarnessConfig's Evidence/ paths; stale-docs --fail; every hook logs.
• ux-design §4: the ui-check agent runs the UI check in review, not the builder, and the screenshots go in its report for G2. The rest of the method (the in-memory database, the run commands, the pane's limits) is unchanged.
• CLAUDE.md: frontend-design is a standing rule now, not trial T7.
• CLAUDE.md takes the template's new workflow lines: the narrow re-review after an amend on Small, the Epic close, drafting before /scope, and where the UI check runs. Standing rules are untouched.
• .claude/harness-manifest.json: refreshed from 9d6087f.

Verification

• ProdHarnessConfig's tests: 135/135, and a fresh-context red-team review with a narrow re-review on ProdHarnessConfig#7.
• The installer's dry run and --apply reported no conflicts and no local edits.
• check fast passes through the new runner here (3 commands).
• stale-docs --staged flagged only .claude/ directory mentions, all still accurate; a search for what D26 changes (the builder running the UI check, trial labels, security-review, reviewOnReady) found only the ux-design lines updated here.

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