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docs: add a DAW verification checklist

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Checks for post-1.0 work that no unit test can close, ordered by risk. Each item cites the obligation it discharges.
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Daniel Harvey
2026-08-02 04:32:29 -04:00
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# DAW verification — post-1.0 work on `dev`
Checks for Θ, Ξ, and Ψ work that no unit test can close. Build **Release**, install into
`UserPlugins/`, restart REAPER. Panel tail toggle = **None**, project rate 48000, unless a check says otherwise.
## Precision invariants
- [ ] Dry offline item capture of a 2 s range, re-inserted at its source position, inverted against the source — reads silence (`CLAUDE.md:207`)
- [ ] Run the identical offline capture request twice — the two files are byte-identical on disk (`CLAUDE.md:208`)
- [ ] After any capture, source items and tracks are unchanged: fader, pan, mute, FX bypass, selection (`CLAUDE.md:209`)
- [ ] After a realtime capture, the temp track is gone and every source track's routing is back as it was (`CLAUDE.md:209`)
- [ ] Capture 10.000–12.000 s — card reads 2.000 s / 96000 frames, no leading or trailing silence (`CLAUDE.md:210`)
- [ ] With an FX on the source track: item scope does NOT carry it, track scope does (`CLAUDE.md:212`)
- [ ] Track scope on a child track with FX, gain, and pan set on the parent and master — neither colors the capture (`CLAUDE.md:212`)
- [ ] Save, move the whole project folder elsewhere, reopen — every card still resolves and auditions (`CLAUDE.md:211`)
## The decisive observation
- [ ] **Run first.** `docs/verify-track-scope-multitrack.md` §3 by hand, and count the files REAPER writes (`docs/TODO.md:552`, `PLAN.md:2134`, `PLAN.md:2238`)
- [ ] Two files confirms Ψ-W1-T1 and Ψ-W3-T1 at once; **one summed file invalidates both** — stop and report, the refusal is costing a capture 1.0.0 accepted (`PLAN.md:2239`, `docs/COMPLETED.md:884`)
- [ ] Then walk the rest of `docs/verify-track-scope-multitrack.md` (§1–§2, §4–§7) for the multi-track refusal itself (`PLAN.md:2240`)
## Capture range and bounds
- [ ] Over an item much longer than the selection: item scope × time selection, and item scope × razor — each lands exactly the window, not the whole item (`PLAN.md:2136`)
- [ ] Same source: track scope × time selection, and track scope × razor — same exact window (`PLAN.md:2136`)
- [ ] One razor-union case (two disjoint areas, one track) — lands the requested window, no `ReaSampler capture failed:` line (`PLAN.md:2137`)
- [ ] Capture an item whose extent already equals the window — still lands, unchanged (the byte-identity regression floor) (`docs/COMPLETED.md:829`)
## Names and channels
- [ ] Capture from a named track — the card reads `<Track> MM-DD HHMM`; capture again the same minute and the second carries an ordinal (`PLAN.md:2199`)
- [ ] Capture from an unnamed track, and from a multi-item selection — both readable, `+N` present on the multi (`PLAN.md:2199`, `docs/COMPLETED.md:862`)
- [ ] Load a named capture into ReaSampler 9000 — the same name shows there (`PLAN.md:2200`)
- [ ] The card label stays legible over its scrim at every card size (`docs/COMPLETED.md:863`)
- [ ] Capture a dead-center mono source — the `.wav` is roughly half the size of the equivalent stereo capture (`PLAN.md:2216`)
- [ ] Insert that collapsed file on a stereo track and null it against the source — confirms REAPER sums a 1-channel item at unity (`PLAN.md:2218`)
- [ ] Capture a true-stereo source — stays 2-channel, and both it and the collapsed file load into the instrument correctly (`PLAN.md:2217`)
## Mode switching
- [ ] Solo tracks in Arrange, switch to Design, solo different tracks, switch back — each mode restores its own solo set verbatim (`PLAN.md:2151`)
- [ ] Attempt a mode switch while the transport is playing, then while recording — both refuse, visibly (`PLAN.md:2151`)
- [ ] Click the footer mode segment, save, reopen the project — the mode persisted (`PLAN.md:2152`, `docs/COMPLETED.md:841`)
## Actions and drops
- [ ] Add the import action to a Media Explorer toolbar and fire it from there — it imports (`PLAN.md:2162`)
- [ ] Fire the existing Main-section import binding — still works (`PLAN.md:2163`)
- [ ] Unload/reload (restart REAPER) — no duplicate Media Explorer entry in the action list (`PLAN.md:2164`)
- [ ] Drag one card across the arrange, over an FX window, over the TCP/MCP and back — cue changes per surface, every transition reverses (`PLAN.md:2176`, `PLAN.md:2177`)
- [ ] Drag fast, and drag onto a narrow TCP — target class still resolves; no release anywhere in REAPER is a silent no-op (`PLAN.md:2178`, `docs/COMPLETED.md:858`)
- [ ] Drop a single card into the arrange — an item lands at the pointer's track and time (`PLAN.md:2174`)
- [ ] Drag-out to an external app twenty-plus times in a row — audio arrives every time; this is a soak, a single pass is not a gate (`docs/COMPLETED.md:109`)
- [ ] Drop a capture onto an FX container — the instrument loads with that capture (`docs/COMPLETED.md:110`)
## The resample bake
- [ ] Bake a dialed sound — the banked file sounds like what the editor was playing (`docs/COMPLETED.md:737`)
- [ ] Bake the result twice more — iteration composes, nothing is lost per pass (`docs/COMPLETED.md:737`)
- [ ] Save and reopen after a bake — the instance still points at the baked capture (`docs/COMPLETED.md:737`)
- [ ] Confirm no bake put an item in the arrange, and the superseded file is still on disk (`docs/COMPLETED.md:737`)
- [ ] Bake from an instance in a background project tab — refuses rather than writing into the wrong bank (`docs/COMPLETED.md:725`)
- [ ] Load the VST with the extension not installed — the resample affordance reads unavailable, not silently lossy (`docs/COMPLETED.md:731`)
- [ ] After a bake: instance is in Trigger with start point reset, channel mode and preview velocity survived (`docs/COMPLETED.md:714`, `docs/COMPLETED.md:720`)
- [ ] Gate mode + active sustain loop — "Bake Hold" appears within ~500 ms, its label fits its cell, its travel is duration-ordered (`docs/COMPLETED.md:806`)
## Instrument migration
- [ ] Open a project saved before the zone retirement — the instance reopens on its first zone and sounds the same (`docs/COMPLETED.md:85`)
- [ ] Such an instance with implicit channel mode + a stereo capture reopens **Stereo** — confirm that is acceptable by ear (`docs/COMPLETED.md:78`)
## Look and feel
- [ ] Sign off by eye in a live editor window: knob arcs, needles, envelope splines, waveform outline (`docs/COMPLETED.md:669`, `PLAN.md:375`)
- [ ] Same pass for legibility: text sizes, arc weight, and whether the waveform stroke thickens the docked panel (`docs/COMPLETED.md:613`, `PLAN.md:348`)
- [ ] Piano strip at the 840 px default — keys tile uniformly, the 37 px end gutters read as acceptable (`docs/COMPLETED.md:219`)
- [ ] Resize the editor across several widths — gutters stay symmetric, no key width jumps (`docs/COMPLETED.md:217`)
- [ ] Set host/OS scaling to 150% then 200% — record how the strip and the AA strokes actually look (`docs/TODO.md:418`, `docs/COMPLETED.md:226`)