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ar9av
d3e545b012
The brain-capture extension only went one way: browser -> vault. This adds the return path — read the form on the current page, answer what the vault supports, and leave the rest blank — and folds both directions into a single two-tab extension renamed from "Brain Vault Capture" to "Brain". Retrieval never calls a model. `obsidian-wiki context-pack --json` ranks the vault deterministically and the model does one narrow job: map retrieved facts onto fields. One `claude -p` / `codex exec` invocation per fill, billed to the subscription the user already has. Nothing is ever submitted. A native messaging host bridges the two, staged into ~/.obsidian-wiki/ rather than run from the checkout. Chrome's children do not inherit your shell, and all three consequences bite: - macOS TCC: ~/Documents is mode 700 with an ACL, and a native host inherits Chrome's TCC context, so a checkout there cannot be exec'd at all. Chrome reports this as "Native host has exited", identical to a crash. - PATH: Chrome passes a minimal PATH, hiding claude/codex in ~/.local/bin. - USER/LOGNAME: Claude Code reads OAuth credentials from the macOS login Keychain and needs these to find them, else "Not logged in" despite a valid session. The host bookends every run in its log so those failures stay distinguishable, re-validates every returned fill against the real form schema (an injected value cannot reach a field the page never advertised), and forwards the pack's instruction_policy so vault excerpts stay data rather than instruction. Form-schema extraction resolves labels via aria-labelledby before aria-label: Google Forms puts aria-label="Your answer" on every paragraph field while the real question sits behind aria-labelledby, so checking aria-label first silently mislabelled exactly the textarea fields. Values are written through the native setter with input/change dispatched, so React-controlled forms see a genuine edit. Docs: docs/browser-extension.md, linked from both READMEs and the docs index. Also backfills the untranslated tagline from #159 into README_TW.md.
