docs: preserve public Inkspan landing page on canonical CI stack

[seonghobae]

Outcome

Verified successor for #396. This PR preserves the complete docs/index.md landing-page delta byte-for-byte, adopts canonical Python matrix/security owner #402 as immutable ancestry, and repairs the missing repository-level DeepWiki entry point without rewriting history.

Exact lineage

• base owner: feat: prepare TipTap 3 migration and restore Python matrix #402 exact 6352283aca654fb5587d3f607e02a57bf6fbd7d9
• predecessor successor head: 4498443df6e230f13b2814db814b4f047888eb95
• current exact head: 2c738ffd114eab0811ab87ff525cf858442c75b0
• ordinary ancestry: ahead 2 / behind 0; merge base equals the reviewed base owner
• effective delta: README.md and docs/index.md only
• predecessor docs: add public Inkspan landing page #396 remains Draft/open until this successor has fresh exact-head validation and complete-delta equivalence is rechecked

Root-cause repair

The carried landing page contained the exact Ask DeepWiki badge, but the canonical README had no repository-facing badge. The metadata reconciler validates the README as the stable repository entry point, so Pages source alone could not satisfy the declared deepwiki:true contract.

• RED readback at 4498443d…: exact README badge count 0
• minimal fast-forward repair: commit 2c738ffd114eab0811ab87ff525cf858442c75b0
• current README blob: 8559bad516e34027422a2f6b300b5b173ede967d
• current docs/index.md blob: e779b921cfbc87b0cddd8ad2047c2b64ad2b096e
• exact-head readback: one exact badge in each owned public entry point

Current review admission — 2026-09-30

• exact head remains 2c738ffd114eab0811ab87ff525cf858442c75b0, open, Ready, and mergeable;
• prior exact-head CI 35475300408 is terminal success;
• Ready-event CI 36687748801 is terminal GREEN on the unchanged exact head;
• no review submissions or unresolved inline threads currently exist; qualifying independent approval is still required;
• no merge or Pages publication claim is authorized.

This remains protected-source preparation only. Ready is review admission so the repository's draft-gated workflows can evaluate this exact head; it is not merge or publication evidence. Parent #402 settlement, current-head hosted Checks, qualifying independent review, repository settings reconciliation, protected integration, deployment, live HTTPS 200, and rendered-source verification remain prerequisites before GitHub Pages publication is claimed. No force update, gate weakening, stale Check transfer, self-approval, or premature publication claim is used.

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[seonghobae]

Successor equivalence verified: compare 6352283… → 4498443… is 1 ahead / 0 behind with exactly one added file, docs/index.md (+46/-0). Its blob e779b921cfbc87b0cddd8ad2047c2b64ad2b096e is byte-identical to predecessor #396. Fresh exact-head Checks only apply to this head; queued/skipped/missing results are not GREEN.

[seonghobae]

Exact-head public-surface repair evidence:

• predecessor head 4498443df6e230f13b2814db814b4f047888eb95: README exact DeepWiki badge count 0
• current head 2c738ffd114eab0811ab87ff525cf858442c75b0: README exact badge count 1, landing exact badge count 1
• ordinary fast-forward only; compare against feat: prepare TipTap 3 migration and restore Python matrix #402 owner is ahead 2 / behind 0 with exactly README.md and docs/index.md
• current hosted CI run 35475150253 is in progress; no predecessor result is transferred
• Draft and publication fail-closed boundary remain in force

Live settings, protected integration, HTTPS delivery, and rendered-source evidence are not established by this repair.

[seonghobae]

Lifecycle reconciliation: this exact source is internally coherent and stack base #402 remains at 6352283aca654fb5587d3f607e02a57bf6fbd7d9, so the PR is Ready for review admission. The earlier Draft-triggered CI run 35475150253 skipped all jobs by the workflow's explicit draft condition; it is not GREEN. Fresh current-head hosted evidence and independent review are required. Parent settlement and publication gates remain unchanged.

[seonghobae]

Exact-head admission correction — 2c738ffd114eab0811ab87ff525cf858442c75b0

Ready is review admission only. Fresh audit against base 6352283aca654fb5587d3f607e02a57bf6fbd7d9 found:

• PR body explicitly requires Draft/not-ready state

This PR is moved to Draft/Proposed until the causal owner repair is present on a successor exact head and re-audited. Queued/pending work is neither an additional blocker nor passing evidence. No Close, force push, destructive rebase, manual rerun, synthetic status/approval, merge, auto-merge, or bypass was performed.