fix(ui): guide cancelled analysis runs

[seonghobae]

Summary

• give every terminal Cancelled analysis kind an evidence-safe next action
• keep TEPP and topic-lineage guidance at the owning service boundary
• make analysis-run cards readable at desktop and phone widths
• retain authenticated synthetic-runtime screenshots and Gap baseline evidence

Verification

• corepack pnpm run lint
• corepack pnpm exec vitest run src/App.test.tsx -t 'gives a cancelled' (4 passed)
• corepack pnpm run build
• authenticated Compose audit at 1440×1000 and 390×844 with four synthetic Cancelled kinds

Stack

Base: #667 (chore/refresh-gap-baseline-20260826). Merge this PR into that branch first; protected-main delivery remains contingent on #667's exact-head gates.

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[seonghobae]

Validated current exact head f78b69c (the branch advanced to 1b5bea3 during the local run; re-fetch required before lifecycle action). Clean frontend worktree App tests passed: 99 passed. No unresolved review threads or current failed Checks; hosted Tests remain queued.

[seonghobae]

Correction: exact current head is 1b5bea33 (remote advanced during validation); the 99-pass App test run was against that current branch head. Re-fetch this SHA again immediately before lifecycle action.

[seonghobae]

Fixed the buyer-visible layout note at exact head a1597b6: succeeded/non-actionable analysis runs now use a two-column grid and no longer reserve an empty next-action column. App tests pass 99/99 in a clean frontend worktree.

[seonghobae]

Corrected the grid contract at exact head 2617520: classes now distinguish document-count and next-action presence, so cancelled/pending runs place the action in the wide second column while succeeded runs use a compact layout. Clean App test run: 99 passed.