docs: final polish — roadmap, typo, full characters gallery (Cycle 22)

[kbennett2000]

Closes out the docs cleanup arc — the last three items from the final audit.

Cycle spec: docs/cycles/cycle-22-final-polish.md.

1. Roadmap — fix the drift and its root cause

• Cycle 19 was stuck "In progress (this PR)" though merged; Cycles 20/21 sat under "Planned" though shipped. The Shipped table now lists 19 (docs: fix stale (coming soon) markers + bring roadmap current (Cycle 19) #23), 20 (docs(voice): write the authentic-voice cluster (Cycle 20) #24), 21 (docs: write the help cluster — getting-started / faq / troubleshooting (Cycle 21) #25), 22.
• Killed the self-staling convention: no more "In progress (this PR)" row — that pattern goes stale on every merge (and did, repeatedly). The table is now factual merged history (status never staling), and forward-looking work lives in a separate "Ideas / not yet scheduled" section that references no in-flight PR. The convention is recorded in the cycle doc and noted in the roadmap itself.

2. Typo

docs/legal-and-assets.md — fixed the dangling TMAFE (The Microsoft Agent Fan ... community) sentence. No invented acronym expansion — reworded to the accurate "TMAFE is the de-facto community archive."

3. Characters gallery — show the real cast

Captured Merlin, Peedy, Robby with the existing capture tooling (live MASH dev server; portraits/animation need no voice container), and committed a portrait + animation GIF for each. characters.md now shows the original four (Genie, Merlin, Peedy, Robby), each with factual detail only (kind + animation count) and the "any .acs works" framing intact.

• Rendered PNG/GIF only — no .acs committed (ADR-0028 / ADR-0006).
• I viewed each image to confirm it rendered: wizard in a star robe, green parrot, silver robot — not blank stages.
• Animation counts verified against the real parser (parseAcs): Genie 76 / Merlin 73 / Peedy 85 / Robby 68.

Verification

• pnpm -r typecheck && pnpm -r test && pnpm lint && pnpm format — green (docs + assets only).
• No .acs staged; all 8 character image refs resolve; every link resolves; no -app.png leftovers.
• code-reviewer cleared all six obligations: roadmap matches git log --merges, convention gone, no invented lore, IP hygiene, images non-blank, scope docs-only.

This should bring the docs to fully DONE (the audit's remaining items were exactly these). Base main, not merged.

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