SellPL
9a5c529a8e
Implements ADR-4 (CLAUDE.md section 3, `rusqlite` bundled). Schedules, lock state, disable attempts and usage buckets now persist across restarts. **Why a new crate rather than a module inside `blocker-core`.** The purity contract says the engine does no I/O, and `tests/purity.rs` enforces that mechanically by failing if `blocker-core` has any dependency at all. Putting rusqlite in `blocker-core` would have forced that check to degrade into a source-text grep — something a careful developer can route around and nobody reads in six months. `blocker-storage` depends on `blocker-core`; the reverse edge does not exist, so the zero-dependency proof stays automatic. Both crates sit in the same layer of the section 2 diagram: storage is shared by every platform and contains no platform code. **Schema is relational, not JSON-in-a-text-column.** `schedule_target` and `schedule_condition` are separate tables because target rows are queried by target, and an index on a JSON string is not a plan. Serialisation is hand-written in `storage/src/codec.rs` — `serde` is not a section 3 dependency, and section 0 rule 3 requires asking before adding one. **Fail open, verified end to end** (section 1.5.4). Corruption moves the damaged file aside and starts clean, keeping the original for diagnosis. Confirmed against the real binary, not only in tests: ``` $ printf 'SQLite format 3\x00 not a database' > .../blocker.db $ blocker-daemon blocker-daemon: database was corrupt and has been moved to .../blocker.db.corrupt; starting clean, so no schedules are active until you re-add them EXIT=0 ``` A truncated file is covered separately — that is what a power loss during a write actually produces, and it fails differently from garbage bytes. **Two bugs this PR's own tests caught:** 1. `prune_usage` anchored its cutoff on `MIN(day_index)`, the oldest row. Since that row is by definition the one being tested, the cutoff always sat before it and the delete matched nothing — the table grew forever, which is the slow disk leak the function exists to prevent. Now anchored on `MAX`. 2. An off-by-one in the same function: with a strict `<` against `newest - keep_days`, the boundary day was kept too, yielding `keep_days + 1` rows. Both are covered by `old_usage_is_pruned`. **Cost, measured rather than assumed:** the stripped daemon goes from 0.279 MB to **1.364 MB** with SQLite actually linked in — bundled SQLite is ~1.1 MB of the 5 MB budget, leaving 3.8 MB for D-Bus, X11 and a UI toolkit. That is a real margin rather than a comfortable one, and it makes ADR-4's bundled-vs-system trade-off a genuine open question rather than a settled one. The M0 figure of 0.279 MB excluded SQLite entirely, because dead-code elimination dropped a crate the placeholder binary never referenced. Co-Authored-By: Claude Code <noreply@anthropic.com>
156 lines
3.7 KiB
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156 lines
3.7 KiB
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