docs: refresh weekly fork retirement evidence (2026-09-14)

[joeshull]

Downstream feature: true
Downstream rationale: keeps the fork retirement ledger auditable — refreshed baseline SHAs (integration dcb4cba32, mirror d1b705a0c, upstream d1a53255f), re-verified all four waiting capabilities at code level against live upstream main, and recorded the single new upstream commit (getpaseo#4824) as capability-neutral; the path is not on the governance allowlist.

Weekly maintenance of docs/fork-retirement.md. No capability status changed: all four remain waiting.

Changes:

• Baseline refreshed: origin/internal/main at dcb4cba32 (the docs: refresh weekly fork retirement evidence #120 merge), mirror unchanged at d1b705a0c, upstream at d1a53255f.
• Upstream delta since the last review: one commit, fix(app): keep growing composers below the header getpaseo/paseo#4824 (composer viewport growth) — verified at code level to touch none of the four capabilities; the scheduled sync workflow will advance the mirror.
• Re-verification pins updated to 2026-09-14 at d1a53255f for all four capabilities: plugin surface (zero SvgXml/addMarkdownExtension/MarkdownSource matches in the plugin package, no @getpaseo/plugin/client/react-native export), OMP lifecycle (completeTurnAfterProviderIdle still an unbudgeted state-only loop, interrupt() still terminalizes running children), Ask options (zero optionDetails matches), Claude background/autonomous lifecycle (no acceptsPromptDuringAutonomousTurn/hasRunningTasks, task_notification still append-only).
• Candidate PRs re-checked unchanged: feat(app): provide SvgXml to plugins getpaseo/paseo#4749/feat(app): let plugins extend assistant markdown rendering getpaseo/paseo#4750/feat(app): provide MarkdownSource to plugins getpaseo/paseo#4752, fix(omp): preserve described select options getpaseo/paseo#3628, claude: spare background subagents from an interrupt, and let one be stopped getpaseo/paseo#4594/fix(server): forward steerActiveTurn through wrapSessionProvider getpaseo/paseo#4633.

Verification: oxfmt --check docs/fork-retirement.md clean; every claim re-derived this run from fetched refs and gh PR inspection.

Weekly resolver report

• Active waiting capability count: 4 (plugin assistant-markdown surface; OMP task/subagent lifecycle; OMP Ask option descriptions; Claude background/autonomous subagent lifecycle).
• Status changes this run: none — all four re-verified waiting against upstream main at d1a53255f by code-level checks, not PR titles; no new capability added; none promoted to upstream-candidate.
• Upstream replacements adopted: none — feat(app): provide SvgXml to plugins getpaseo/paseo#4749/feat(app): let plugins extend assistant markdown rendering getpaseo/paseo#4750/feat(app): provide MarkdownSource to plugins getpaseo/paseo#4752, fix(omp): preserve described select options getpaseo/paseo#3628, claude: spare background subagents from an interrupt, and let one be stopped getpaseo/paseo#4594/fix(server): forward steerActiveTurn through wrapSessionProvider getpaseo/paseo#4633 still open with unchanged heads; upstream main advanced only by fix(app): keep growing composers below the header getpaseo/paseo#4824 (composer viewport), capability-neutral.
• Fork implementations removed: none.
• Sync PRs found/resolved/skipped: none found — origin/main (d1b705a0c) is already an ancestor of origin/internal/main at run start (dcb4cba32), git merge-tree reports zero conflicts, no open head main → base internal/main PRs, and no open Downstream sync: true resolver. The mirror trails upstream by one commit (fix(app): keep growing composers below the header getpaseo/paseo#4824) pending the scheduled sync workflow; that commit overlaps no fork plugin-surface file, so the next sync should classify clean or derived-only.
• Ledger PR: this PR (Downstream feature: true) — merged into internal/main as merge commit 1ce7e45082. Validation: CI green for head f5f564aea (changes + format pass; remaining jobs skipped docs-only via ci-paths), Upstream provenance green, ship-gate governance review posted as PASS with no findings (confidence 0.95), oxfmt --check clean.

[joeshull]

Focused governance review of f5f564aea (Downstream feature, docs-only).

Verdict: PASS. No high-risk findings. No advisory findings. Confidence 0.95.

• Diff limited to docs/fork-retirement.md; body has exactly one Downstream feature: true line, one non-empty Downstream rationale: line, no conflicting mode or upstream-provenance markers, and ## Weekly resolver report as the final section.
• Evidence spot-checks against fetched refs: origin/internal/main tip is dcb4cba32 (docs: refresh weekly fork retirement evidence #120 merge); upstream/main is d1a53255f; d1b705a0c..upstream/main contains exactly one commit (fix(app): keep growing composers below the header getpaseo/paseo#4824, composer viewport / keyboard-shift / agent panel surfaces, capability-neutral). git grep on upstream/main returns zero matches for addMarkdownExtension, MarkdownSource, optionDetails, acceptsPromptDuringAutonomousTurn (and zero SvgXml/hasRunningTasks in the checked scopes); fork dcb4cba32 retains the optionDetails (omp agent/rpc-types/tests) and addMarkdownExtension (packages/app/src/plugins) implementations. Quoted baseline SHAs resolve as described.
• oxfmt --check docs/fork-retirement.md passes on the PR head; CI (changes+format) and Upstream provenance green for f5f564aea.