feat(reader): delete the local archived copy — deleteArticle gets a caller (S4)

[bryanmatthewsimonson]

Answers "Do we even have the ability to delete captures?" — the last of the four archive-integrity findings. deleteArticle existed with zero callers; now it has one, and the "Clear all" confirm stops lying.

The 🗑 button (reader header, hidden on read-only opens)

Deletes the local archived row for the open capture — found the way the load path finds it (primary URL, then the alias-resolved original; both forms deleted). The confirm is an honest account with real counts, not a bare "are you sure":

• Deleted: the archived copy + its N prior versions. It disappears from case membership, the corpus, and the archive banner.
• Kept: your N claims and M audit runs on this URL (they key to URL/hash, not the copy); anything already published — relays cannot be forced to delete, NIP-09 is advisory, and pretending otherwise would be dishonest; archived source bytes, which the age-gated orphan pruner collects once unreferenced.

Deliberately narrow scope: local only. This is the "remove the CAPTCHA page / duplicate from my corpus" tool, not a wire retraction tool.

The Clear-all fix

The old confirm promised to erase "entities, the keypair registry" — but storageClearExtension clears only the legacy userscript keys (publications/people/organizations/keypair_registry); the modern workspace stores were never touched. The confirm now promises exactly what it delivers — settings, signing key, LLM key, legacy stores — and points at "Start fresh workspace" (which actually does clear content) for the rest.

Verification

• Tests: delete takes the row together with its priorVersions snapshot (a dangling prior would resurrect "deleted" content); absent-row delete is a no-op; delete joins through the same URL normalizer as save (a tracking-param variant deletes the canonical row).
• SMOKE 7.3a–7.3c cover the hand walk.
• npm test — 1721 pass, 0 fail · npm run build clean (dist/ unlocked again) · lint 0 errors · no wire change.

That closes all four archive-integrity findings: #185 (wrong article) → #186 (false banners) → #187 (hash drift) → this (delete).

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