docs: capture todo - unify folder-state ownership in SDK client

[FSM1]

Captures the architectural follow-up surfaced while root-causing the recycle-bin TC08 failure (fixed in #489).

Why: Folder state (children + IPNS sequence) is duplicated across the web Zustand useFolderStore and the SDK client folderTree. They drift because some web paths (file replace/version) publish folder metadata directly via sdk-core, updating only the store. #489 shipped a reconciliation band-aid (client.reconcileFolderState); this todo tracks the real fix — make the SDK client the single source of truth, turn the web store into a projection fed by folder:updated events, and delete reconcileFolderState once the desync is impossible by construction.

Adds one planning todo; no code changes. Related but distinct from the existing publishWithCas retry-dedup todo.

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📥 Commits

Reviewing files that changed from the base of the PR and between 1abceb4 and 09491e6.

📒 Files selected for processing (1)

• .planning/todos/pending/2026-06-14-unify-folder-state-ownership-in-sdk-client.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/capture-sdk-folder-state-unification

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