Implements Library.open() and the transparent background refresh loop over the local cache.
open() loads the metadata store, runs one refresh, then a background timer refreshes every refreshIntervalSeconds (default 3). Every read is answered from RAM and never triggers a network call. Per the settled design there is no sync(), no refresh(), no serverReachable flag, and no before-each-read mode.
A refresh does all network reads first (the collections diff since the stored cursor, then per-collection file diffs) and commits to the store only after every fetch succeeds, so a failed refresh is invisible to reads — the last good snapshot stays and the failure surfaces via onProgress ("failed") and status(). The cache is rewritten only when something changed.
Builds on the metadata store (#41) and the resumable, tombstone-aware enumerators (#38); neither is reimplemented.
Not obvious from the diff:
A collection's files are re-enumerated only when its updationTime advances past the cached copy, using that cached updationTime as the per-collection file cursor — so no store schema change was needed.
The read surface is intentionally minimal (collections and file memberships); the album/photo/timeline surface belongs to later phases.
The interval tests use real timers with a short interval: a fake clock cannot settle the real fsync-and-rename cache write, and empty diffs never write, so the eventual state is stable to poll.
make check passes (tests + Docker lint).
Model: opus-4-8
Implements `Library.open()` and the transparent background refresh loop over the local cache.
`open()` loads the metadata store, runs one refresh, then a background timer refreshes every `refreshIntervalSeconds` (default 3). Every read is answered from RAM and never triggers a network call. Per the settled design there is no `sync()`, no `refresh()`, no `serverReachable` flag, and no before-each-read mode.
A refresh does all network reads first (the collections diff since the stored cursor, then per-collection file diffs) and commits to the store only after every fetch succeeds, so a failed refresh is invisible to reads — the last good snapshot stays and the failure surfaces via `onProgress` ("failed") and `status()`. The cache is rewritten only when something changed.
Builds on the metadata store (https://git.eeqj.de/sneak/quak/issues/41) and the resumable, tombstone-aware enumerators (https://git.eeqj.de/sneak/quak/issues/38); neither is reimplemented.
Not obvious from the diff:
- A collection's files are re-enumerated only when its `updationTime` advances past the cached copy, using that cached `updationTime` as the per-collection file cursor — so no store schema change was needed.
- The read surface is intentionally minimal (collections and file memberships); the album/photo/timeline surface belongs to later phases.
- The interval tests use real timers with a short interval: a fake clock cannot settle the real fsync-and-rename cache write, and empty diffs never write, so the eventual state is stable to poll.
`make check` passes (tests + Docker lint).
Model: opus-4-8
1. open() always blocks on the first network refresh; a later run must not. src/library/index.ts, Library.open() (the await lib.runRefresh(); lib.scheduleNext(); at the end) awaits the first refresh unconditionally, regardless of whether an existing local copy was loaded. Issue #42 requires: a first run with no local copy resolves only when the first fetch completes, but a later run resolves as soon as the local copy is loaded and the first refresh starts — it must not block on the network. As written, opening against an existing cache with a slow or unreachable server hangs until the network responds or fails, which defeats the phase's whole point (reads served from the local copy with no network in front of a caller) at startup for the common case. Acceptable: branch on whether the store loaded an existing copy — empty cache awaits the first refresh; existing cache kicks the first refresh off in the background (not awaited) and returns once the local copy is loaded. The required first-run-vs-later-run test is effectively missing: no test proves a later-run open() resolves before a slow refresh completes. Add one where collectionsSince never resolves yet open() still resolves and reads serve the cached data, alongside a first-run case that does await.
2. A failed save() leaves RAM ahead of disk and then silently clears the error. (lower severity) src/library/index.ts, refreshOnce() mutates the in-memory store before await this.store.save(); runRefresh() clears lastError on the next successful tick. If every fetch succeeds but the persist fails, the in-memory store already holds the new snapshot and advanced cursor while metadata.json keeps the old one. The next tick fetches from the advanced in-RAM cursor, sees nothing changed, does not re-save, and clears lastError — so the on-disk cache stays stale indefinitely and the persist failure disappears from status(). Reads stay correct from RAM and the cache self-heals on restart, so this is minor, but it diverges from "commits to the store only once every fetch succeeds" and hides a persistent write failure. Acceptable: keep lastError set until a save actually succeeds, or roll the in-memory mutation back on save failure so RAM and disk stay in lockstep.
Everything else gated cleanly: base is current next and rebases with no conflict; make check is green here (tests plus a fresh Docker eslint/prettier run); make fmt clean; reads are answered from RAM with no network; the store (#41) and enumerators (#38) are reused, not reimplemented; tombstones, cursor threading, and rewrite-only-on-change behave; close()/status() behave; no sync()/refresh()/serverReachable/before-each-read surface; TODO.md untouched; squash subject carries (closes #42); the PR body and commit both carry a Model: line with no unwanted attribution.
Model: opus-4-8
**FAIL** — needs-rework.
**1. `open()` always blocks on the first network refresh; a later run must not.**
`src/library/index.ts`, `Library.open()` (the `await lib.runRefresh(); lib.scheduleNext();` at the end) awaits the first refresh unconditionally, regardless of whether an existing local copy was loaded. Issue #42 requires: a first run with no local copy resolves only when the first fetch completes, but a later run resolves as soon as the local copy is loaded and the first refresh *starts* — it must not block on the network. As written, opening against an existing cache with a slow or unreachable server hangs until the network responds or fails, which defeats the phase's whole point (reads served from the local copy with no network in front of a caller) at startup for the common case. Acceptable: branch on whether the store loaded an existing copy — empty cache awaits the first refresh; existing cache kicks the first refresh off in the background (not awaited) and returns once the local copy is loaded. The required first-run-vs-later-run test is effectively missing: no test proves a later-run `open()` resolves before a slow refresh completes. Add one where `collectionsSince` never resolves yet `open()` still resolves and reads serve the cached data, alongside a first-run case that does await.
**2. A failed `save()` leaves RAM ahead of disk and then silently clears the error.** (lower severity)
`src/library/index.ts`, `refreshOnce()` mutates the in-memory store before `await this.store.save()`; `runRefresh()` clears `lastError` on the next successful tick. If every fetch succeeds but the persist fails, the in-memory store already holds the new snapshot and advanced cursor while `metadata.json` keeps the old one. The next tick fetches from the advanced in-RAM cursor, sees nothing changed, does not re-save, and clears `lastError` — so the on-disk cache stays stale indefinitely and the persist failure disappears from `status()`. Reads stay correct from RAM and the cache self-heals on restart, so this is minor, but it diverges from "commits to the store only once every fetch succeeds" and hides a persistent write failure. Acceptable: keep `lastError` set until a save actually succeeds, or roll the in-memory mutation back on save failure so RAM and disk stay in lockstep.
Everything else gated cleanly: base is current `next` and rebases with no conflict; `make check` is green here (tests plus a fresh Docker eslint/prettier run); `make fmt` clean; reads are answered from RAM with no network; the store (#41) and enumerators (#38) are reused, not reimplemented; tombstones, cursor threading, and rewrite-only-on-change behave; `close()`/`status()` behave; no `sync()`/`refresh()`/`serverReachable`/before-each-read surface; `TODO.md` untouched; squash subject carries `(closes #42)`; the PR body and commit both carry a `Model:` line with no unwanted attribution.
Model: opus-4-8
Add the Library surface over the on-disk metadata store. open() loads the
cache, then starts the refresh loop, branching on what was cached: an empty
cache awaits the first refresh so open() resolves onto populated data, while an
existing cache serves its copy immediately and refreshes in the background, so a
slow or unreachable server never stalls opening. A background timer then
refreshes every refreshIntervalSeconds (default 3). Reads are answered from RAM
and never touch the network; there is no sync(), no refresh(), no
serverReachable flag, and no before-each-read mode.
A refresh does all its network reads first and commits to the store only once
every fetch succeeds, so a failed refresh is invisible to reads: the last good
snapshot stays and the failure surfaces via onProgress ("failed") and status().
The cache is rewritten only when something actually changed. A commit that
mutates RAM but then fails to persist keeps status().lastError set and keeps
retrying the write until a save lands, so RAM never runs ahead of disk with the
failure masked by a later empty refresh.
A collection's files are re-enumerated only when its updationTime advances past
the cached copy, using that cached updationTime as the per-collection file
cursor, so no store schema change is needed. Reads expose only what this phase
needs (collections and file memberships); the album/photo/timeline surface is
later phases. Interval tests use real timers with a short interval because a
fake clock cannot settle the real fsync-and-rename cache write.
Model: opus-4-8
Reworked; head now 83878e18984edcc04a8e835541386ebf80a53cf8.
Finding 1: open() now branches on the loaded cache — an empty cache still awaits the first refresh, an existing cache serves its copy at once and refreshes in the background, so an unreachable server no longer stalls opening. Added a later-run test (unresolved collectionsSince, open() still resolves and reads serve the cache) and a first-run test that proves the initial refresh is awaited.
Finding 2: a failed save() now keeps the store marked unsaved and keeps retrying on later refreshes, so status().lastError stays set until a save actually lands and a stale disk is never masked. Added a test that a persistent save failure keeps the error and clock from advancing, then clears only once the write succeeds.
Model: opus-4-8
Reworked; head now `83878e18984edcc04a8e835541386ebf80a53cf8`.
- Finding 1: `open()` now branches on the loaded cache — an empty cache still awaits the first refresh, an existing cache serves its copy at once and refreshes in the background, so an unreachable server no longer stalls opening. Added a later-run test (unresolved `collectionsSince`, `open()` still resolves and reads serve the cache) and a first-run test that proves the initial refresh is awaited.
- Finding 2: a failed `save()` now keeps the store marked unsaved and keeps retrying on later refreshes, so `status().lastError` stays set until a save actually lands and a stale disk is never masked. Added a test that a persistent save failure keeps the error and clock from advancing, then clears only once the write succeeds.
Model: opus-4-8
Both prior findings are genuinely fixed, each with a meaningful mock-Client test: open() now awaits the first refresh only on an empty cache and kicks it off in the background on an existing one (a never-resolving collectionsSince still lets open() resolve and serve the cached copy), and a failed save() keeps status().lastError set and keeps retrying the write until one lands, so a stale disk is never masked. The rest of the #42 contract and the gate hold: reads served from RAM with no network surface; the store (#41) and enumerators (#38) are reused, not reimplemented; changed-album-only diffs, tombstones, cursor threading, and rewrite-only-on-change behave; status()/close() behave; base is current next and rebases cleanly; make check is green here; make fmt clean; TODO.md untouched; subject carries (closes #42); Model: lines present with no unwanted attribution.
One finding:
Commit body exceeds the length limit. The landing commit 83878e1 has a ~244-word, three-paragraph body — roughly double the ~120-word limit for a commit message body. It largely restates the PR body and the source-file header comments. Acceptable: trim to ~120 words. The branch/await split, the stage-all-fetches-then-commit refresh, and the unsaved-and-retry behavior can be one sentence each; the fuller explanation already lives in the code comments and the PR description.
Model: opus-4-8
**FAIL** — needs-rework.
Both prior findings are genuinely fixed, each with a meaningful mock-`Client` test: `open()` now awaits the first refresh only on an empty cache and kicks it off in the background on an existing one (a never-resolving `collectionsSince` still lets `open()` resolve and serve the cached copy), and a failed `save()` keeps `status().lastError` set and keeps retrying the write until one lands, so a stale disk is never masked. The rest of the #42 contract and the gate hold: reads served from RAM with no network surface; the store (#41) and enumerators (#38) are reused, not reimplemented; changed-album-only diffs, tombstones, cursor threading, and rewrite-only-on-change behave; `status()`/`close()` behave; base is current `next` and rebases cleanly; `make check` is green here; `make fmt` clean; `TODO.md` untouched; subject carries `(closes #42)`; `Model:` lines present with no unwanted attribution.
One finding:
**Commit body exceeds the length limit.** The landing commit `83878e1` has a ~244-word, three-paragraph body — roughly double the ~120-word limit for a commit message body. It largely restates the PR body and the source-file header comments. Acceptable: trim to ~120 words. The branch/await split, the stage-all-fetches-then-commit refresh, and the unsaved-and-retry behavior can be one sentence each; the fuller explanation already lives in the code comments and the PR description.
Model: opus-4-8
Sole finding is commit-body length. The landing commit is the squash commit, whose message the manager writes at merge time — using a ~120-word body, so nothing over-length enters history. Both code findings from the first pass were verified fixed and the gate is green; merging.
Model: opus-4-8
Sole finding is commit-body length. The landing commit is the squash commit, whose message the manager writes at merge time — using a ~120-word body, so nothing over-length enters history. Both code findings from the first pass were verified fixed and the gate is green; merging.
Model: opus-4-8
clawbot
merged commit 7570055a5b into next2026-09-22 14:52:02 +02:00
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Implements
Library.open()and the transparent background refresh loop over the local cache.open()loads the metadata store, runs one refresh, then a background timer refreshes everyrefreshIntervalSeconds(default 3). Every read is answered from RAM and never triggers a network call. Per the settled design there is nosync(), norefresh(), noserverReachableflag, and no before-each-read mode.A refresh does all network reads first (the collections diff since the stored cursor, then per-collection file diffs) and commits to the store only after every fetch succeeds, so a failed refresh is invisible to reads — the last good snapshot stays and the failure surfaces via
onProgress("failed") andstatus(). The cache is rewritten only when something changed.Builds on the metadata store (#41) and the resumable, tombstone-aware enumerators (#38); neither is reimplemented.
Not obvious from the diff:
updationTimeadvances past the cached copy, using that cachedupdationTimeas the per-collection file cursor — so no store schema change was needed.make checkpasses (tests + Docker lint).Model: opus-4-8
FAIL — needs-rework.
1.
open()always blocks on the first network refresh; a later run must not.src/library/index.ts,Library.open()(theawait lib.runRefresh(); lib.scheduleNext();at the end) awaits the first refresh unconditionally, regardless of whether an existing local copy was loaded. Issue #42 requires: a first run with no local copy resolves only when the first fetch completes, but a later run resolves as soon as the local copy is loaded and the first refresh starts — it must not block on the network. As written, opening against an existing cache with a slow or unreachable server hangs until the network responds or fails, which defeats the phase's whole point (reads served from the local copy with no network in front of a caller) at startup for the common case. Acceptable: branch on whether the store loaded an existing copy — empty cache awaits the first refresh; existing cache kicks the first refresh off in the background (not awaited) and returns once the local copy is loaded. The required first-run-vs-later-run test is effectively missing: no test proves a later-runopen()resolves before a slow refresh completes. Add one wherecollectionsSincenever resolves yetopen()still resolves and reads serve the cached data, alongside a first-run case that does await.2. A failed
save()leaves RAM ahead of disk and then silently clears the error. (lower severity)src/library/index.ts,refreshOnce()mutates the in-memory store beforeawait this.store.save();runRefresh()clearslastErroron the next successful tick. If every fetch succeeds but the persist fails, the in-memory store already holds the new snapshot and advanced cursor whilemetadata.jsonkeeps the old one. The next tick fetches from the advanced in-RAM cursor, sees nothing changed, does not re-save, and clearslastError— so the on-disk cache stays stale indefinitely and the persist failure disappears fromstatus(). Reads stay correct from RAM and the cache self-heals on restart, so this is minor, but it diverges from "commits to the store only once every fetch succeeds" and hides a persistent write failure. Acceptable: keeplastErrorset until a save actually succeeds, or roll the in-memory mutation back on save failure so RAM and disk stay in lockstep.Everything else gated cleanly: base is current
nextand rebases with no conflict;make checkis green here (tests plus a fresh Docker eslint/prettier run);make fmtclean; reads are answered from RAM with no network; the store (#41) and enumerators (#38) are reused, not reimplemented; tombstones, cursor threading, and rewrite-only-on-change behave;close()/status()behave; nosync()/refresh()/serverReachable/before-each-read surface;TODO.mduntouched; squash subject carries(closes #42); the PR body and commit both carry aModel:line with no unwanted attribution.Model: opus-4-8
Add the Library surface over the on-disk metadata store. open() loads the cache, then starts the refresh loop, branching on what was cached: an empty cache awaits the first refresh so open() resolves onto populated data, while an existing cache serves its copy immediately and refreshes in the background, so a slow or unreachable server never stalls opening. A background timer then refreshes every refreshIntervalSeconds (default 3). Reads are answered from RAM and never touch the network; there is no sync(), no refresh(), no serverReachable flag, and no before-each-read mode. A refresh does all its network reads first and commits to the store only once every fetch succeeds, so a failed refresh is invisible to reads: the last good snapshot stays and the failure surfaces via onProgress ("failed") and status(). The cache is rewritten only when something actually changed. A commit that mutates RAM but then fails to persist keeps status().lastError set and keeps retrying the write until a save lands, so RAM never runs ahead of disk with the failure masked by a later empty refresh. A collection's files are re-enumerated only when its updationTime advances past the cached copy, using that cached updationTime as the per-collection file cursor, so no store schema change is needed. Reads expose only what this phase needs (collections and file memberships); the album/photo/timeline surface is later phases. Interval tests use real timers with a short interval because a fake clock cannot settle the real fsync-and-rename cache write. Model: opus-4-8501d623985to83878e1898Reworked; head now
83878e18984edcc04a8e835541386ebf80a53cf8.open()now branches on the loaded cache — an empty cache still awaits the first refresh, an existing cache serves its copy at once and refreshes in the background, so an unreachable server no longer stalls opening. Added a later-run test (unresolvedcollectionsSince,open()still resolves and reads serve the cache) and a first-run test that proves the initial refresh is awaited.save()now keeps the store marked unsaved and keeps retrying on later refreshes, sostatus().lastErrorstays set until a save actually lands and a stale disk is never masked. Added a test that a persistent save failure keeps the error and clock from advancing, then clears only once the write succeeds.Model: opus-4-8
FAIL — needs-rework.
Both prior findings are genuinely fixed, each with a meaningful mock-
Clienttest:open()now awaits the first refresh only on an empty cache and kicks it off in the background on an existing one (a never-resolvingcollectionsSincestill letsopen()resolve and serve the cached copy), and a failedsave()keepsstatus().lastErrorset and keeps retrying the write until one lands, so a stale disk is never masked. The rest of the #42 contract and the gate hold: reads served from RAM with no network surface; the store (#41) and enumerators (#38) are reused, not reimplemented; changed-album-only diffs, tombstones, cursor threading, and rewrite-only-on-change behave;status()/close()behave; base is currentnextand rebases cleanly;make checkis green here;make fmtclean;TODO.mduntouched; subject carries(closes #42);Model:lines present with no unwanted attribution.One finding:
Commit body exceeds the length limit. The landing commit
83878e1has a ~244-word, three-paragraph body — roughly double the ~120-word limit for a commit message body. It largely restates the PR body and the source-file header comments. Acceptable: trim to ~120 words. The branch/await split, the stage-all-fetches-then-commit refresh, and the unsaved-and-retry behavior can be one sentence each; the fuller explanation already lives in the code comments and the PR description.Model: opus-4-8
Sole finding is commit-body length. The landing commit is the squash commit, whose message the manager writes at merge time — using a ~120-word body, so nothing over-length enters history. Both code findings from the first pass were verified fixed and the gate is green; merging.
Model: opus-4-8