feat(channel): port couch account channel client from obsidian#16
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Transport-agnostic CouchDB replicator (fetch + FileStore + persistence injected): content-addressed doc model, resumable paged pull, token mint/cache, host resolution. Byte-compatible with the obsidian plugin's wire model. Adds 41 tests. Bumps 0.2.0 -> 0.3.0.
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What
Ports the shipped, adversarially-hardened couch sync channel client from the Obsidian plugin (
agentage/obsidian-sync) intomemory-coreas a transport-agnosticsrc/channel/module, so the CLI daemon (and later VS Code) reuse the exact replicator the plugin ships.The wire behavior is a faithful port - the doc model stays byte-compatible with the plugin so the server bridge reassembles either client's writes. Only the runtime edges are adapted to injected seams (no Obsidian, no
node:fs, no HTTP lib).Module (
src/channel/)couch-doc.tsh:<hash>+ filef:<path>docs)couch-token.tsCouchTokenClient- mint/cache the couch JWT, re-mint 60s before expiry,invalidate()couch-state.tsCouchStatePersistencecouch-sync.tsCouchSync- paged pull / bulk push / delete over an injectedFileStore+fetchresolve-host.ts/.well-known/agentage-syncparser +channelForVault(degrades to git)http.tsFetchLikeseam (a host injectsglobalThis.fetch)Injected edges (only deviations from the plugin)
Vault/TFile->FileStore { listMarkdown, read, write, remove }(vault-relative POSIX).requestUrl-> injectedFetchLike.saveData->CouchStatePersistence { load, save }(CLI = JSON file);createCouchState()awaits the async load.window.setTimeoutsuppress-clear -> globalsetTimeout().unref()(isomorphic).Core wire behavior unchanged: missing leaf on pull throws and aborts the page (cursor not advanced), no-op push skips the network,
_bulk_docs {new_edits:false}+PUT f:<path>, 401 -> re-mint + retry once, pending-push queue.Tests
41 new tests (145 total, all green). Includes a byte-for-byte doc-model lock with literal leaf ids/revs cross-checked against the plugin's own test vectors, plus the hardening cases (missing-leaf abort, paged cursor persist, zero-fetch no-op push, rejected-push-not-cached, queue flush, 401 retry, channel degradation).
Release
Bumps
0.2.0 -> 0.3.0(additive minor). Publishes on squash-merge to master via thechore(release)subject.