[Birfy]

Risk: T3 (AGENTS.md and the policy docs).

The owner's new hard rule: when an issue already has a pull request, work in that one — do not open a second and close the first. This records it next to the admission line, so the two are read together.

What changes (4 files, +7 -1)

• AGENTS.md: a new paragraph in the admission-line section — re-base the open branch, use update-branch, or push a commit to its head, and put the tests there too; a contributor's fork is treated the same while it allows maintainer edits; the only exception is a branch that cannot be pushed, and then the reason goes on the issue, never a silent swap.
• docs/code-standards.md: the same rule as a bullet under "Merge only a reviewed tip".
• docs/autonomous-dev.md: one sentence in the merge-by-tier item.
• .claude/skills/fix-issue/SKILL.md: a bullet in step 4 (PR).

It applies to new work from now on: #586 and its closed originals (#535/#539/#568) are left exactly as they are, as the Chief asked.

Checks

• node --test .github/scripts/*.test.mjs — 93/93.
• check-arch-docs.mjs with ARCH_DOCS_BASE=HEAD~1 — OK (4 changed files).
• scripts/ds-bot-patches.mjs check — OK (no code touched).
• changelog.mjs check — OK; no fragment, a change users cannot see and that ships no code.
• TZ=UTC.

Not run: one-shot npm run verify (2 GiB OOM in this container), full core suite, smoke, Desktop.

[Birfy]

Verdict: PASS at c053cca

Tip SHA: c053cca3bdd97ceea96f57ab37a94291fdd5f094
This records the owner's new hard rule (an issue that already has a PR keeps it; update that branch instead of opening a second) next to the admission line, so the two are read together. Scope decision: the owner's own request.
Diff (4 files, +7 -1, no code): `AGENTS.md` (new paragraph in the admission-line section, with the exception and the obligation to write the reason on the issue), `docs/code-standards.md` (bullet under "Merge only a reviewed tip"), `docs/autonomous-dev.md` (one sentence in the merge-by-tier item), `.claude/skills/fix-issue/SKILL.md` (bullet in step 4).
It applies to new work: #586 and the three originals it replaced are untouched, as the Chief asked.
Ran at the tip: CI all green (tests-ok, plugins social/tree/timeline, package, Node 24). On this tree: `node --test .github/scripts/*.test.mjs` 93/93, `check-arch-docs.mjs` with `ARCH_DOCS_BASE=HEAD~1` OK (4 files), `scripts/ds-bot-patches.mjs check` OK, `changelog.mjs check` OK. No fragment: a change users cannot see ships none. TZ=UTC.
Not run: one-shot `npm run verify` (2 GiB OOM), full core suite, smoke, Desktop.
Tier: **T3** (`AGENTS.md`, the policy docs). Enqueueing it myself under the rule it records. Any new commit voids the PASS.