reasampler/docs/VERIFICATION.md

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)
• Open blocker — root cause unknown; the three steps below are the experiment (both live hypotheses and what is NOT yet excluded: docs/TODO.md §An offline capture can be refused for a short render). A live capture over [0.000000s, 4.067797s) was refused 38 frames short (195216 of 195254 at 48 kHz). Set View → time unit to Samples first
• Step 1 — does the item-scope render bound itself to the media? This only tests anything if item scope actually reaches REAPER's selected-items render, and it does that ONLY when the selected items' extent already equals the requested window (itemExtentPrintsWindow, src/core/capture/render_window.h); otherwise item scope re-sources through the items' own tracks — the same source track scope uses, so the two runs would test one thing twice. So: snap the time selection to the item's exact start and end, run item scope, then track scope over the identical range. Report both Render source: lines and both frame counts. If both lines read selected tracks via master, the item path was NOT exercised — the extents did not match; re-snap and repeat before concluding anything
• Step 2 — full-length or short? Extend the same range ~1 s past the end of all media, track scope. Landing with the full range (no refusal, the card reads the extended length) rules out BOTH a trailing-silence trim and a content-extent bound at once. A short render does NOT tell them apart: a trim firing despite RENDER_NORMALIZE &(4<<16) and a render bounding itself to content extent produce the same count. Report which happened, then run step 3
• Step 3 — where are the missing frames? A refused render is kept deliberately, not deleted: it is moved to <project folder>/reasampler_refused/. Follow the path in the refusal line, not this sentence — if the move itself failed the file stays in the bank folder, unindexed, and the line says which happened. Insert it against the source over the same range and report whether the head aligns. Frames missing from the TAIL with an aligned head fits either a tail trim or a content-extent bound; a head offset fits neither and is a start-position defect. Also report whether the media under the range ends before the range does. Delete reasampler_refused/ when done — nothing in the bank references it

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)