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Ξ-W2-T1: the resample bake chain — instrument renders, extension banks, one click re-points and resets

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Daniel Harvey
2026-08-01 16:26:28 -04:00
parent 6c982cd617
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src/shell/persist/CLAUDE.md
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@@ -51,7 +51,7 @@ REAPER/filesystem-facing half only, and it gathers rather than decides.
## Modules
- `shell/persist` (`session` / `ext_state_io` / `prune_fs`) — the persist seam, split by responsibility (Q-W5; the former `persist.cpp` god-TU and its `persist.h` compatibility umbrella are both retired — callers include `shell/persist/session.h` / `ext_state_io.h` directly). `session` owns the `ReaSamplerSession` lifecycle: the poll identity-transition detection (load / Save-As / forked sibling / recycled pointer) and the `projectconfig`-driven deferred undo/redo reload. `ext_state_io` owns project ext state (`SetProjExtState`/`GetProjExtState`, namespace `"reasampler"`) ↔ `BankBook` JSON, `ViewModeModel` JSON, `TailSetting` JSON, the tracking ledger JSON, the writing-version stamp, GUID minting, and bank-folder relocation. `session` additionally owns `recordCreated` — **the one writer of a birth record**, called at the same point the `Sample` is added, deriving lineage from that `Sample`'s own provenance. `prune_fs` hosts the prune dry-run / full-set orphan queries (gathering `referencedPaths()` plus `tracking::pruneProtection`'s two inputs for the `prune_reconcile` pure core) and is **the single file-deletion authority over user files in the bank folder** (`deleteOrphanFile` via `SHFileOperationW`); nothing else in the system deletes bank-folder bytes. Dry-run / orphan-set / reclaim each independently abort (delete nothing) when the authority reports a block.
- `shell/persist` (`session` / `ext_state_io` / `prune_fs`) — the persist seam, split by responsibility (Q-W5; the former `persist.cpp` god-TU and its `persist.h` compatibility umbrella are both retired — callers include `shell/persist/session.h` / `ext_state_io.h` directly). `session` owns the `ReaSamplerSession` lifecycle: the poll identity-transition detection (load / Save-As / forked sibling / recycled pointer) and the `projectconfig`-driven deferred undo/redo reload. `ext_state_io` owns project ext state (`SetProjExtState`/`GetProjExtState`, namespace `"reasampler"`) ↔ `BankBook` JSON, `ViewModeModel` JSON, `TailSetting` JSON, the tracking ledger JSON, the writing-version stamp, GUID minting, and bank-folder relocation. `session` additionally owns `recordCreated` — **the one writer of a birth record**, called at the same point the `Sample` is added, deriving lineage from that `Sample`'s own provenance. `prune_fs` hosts the prune dry-run / full-set orphan queries (gathering `referencedPaths()` plus `tracking::pruneProtection`'s two inputs for the `prune_reconcile` pure core) — and, beside them, `tiedUsageFor`, the resample's replace-vs-add input, deliberately co-located so "both answers come out of one `TrackingState`" is structural rather than a rule two files must remember. It is also **the single file-deletion authority over user files in the bank folder** (`deleteOrphanFile` via `SHFileOperationW`); nothing else in the system deletes bank-folder bytes. Dry-run / orphan-set / reclaim each independently abort (delete nothing) when the authority reports a block.
- `usage_scan` — extension-side prune-scan shell: enumerates every `rsusage_*` ext-state key, decodes each `sample_usage` wire record, enumerates every ReaSampler 9000 FX instance across all tracks + master / normal + record chains / containers (recursive) / take FX, and returns the pure `sample_usage::foldUsageRecords` result verbatim. One of the two inputs `tracking::pruneProtection` reads; it decides nothing itself. Read-only: writes no ext-state.
- `persist_internal.h` — internal-only shared helpers for the persist TU family (`session` / `ext_state_io` / `prune_fs`); included only by those three TUs, never a public seam (mirror of the panel's `panel_state.h` / the editor's `editor_internal.h` precedent). Holds the former anonymous-namespace helpers more than one split TU needs (active-project + `.rpp` path lookup, project-dir derivation, growing `GetProjExtState` read, project-GUID minting, bank-folder relocation) — all definitions live in `ext_state_io.cpp`. REAPER-free header: the project handle crosses this seam as the same opaque `void*` the public `session` header already uses.