docs: archive Phase L L5 to COMPLETED; reconcile CLAUDE.md + CONTEXT.md + PLAN.md

CLAUDE.md

@@ -4,7 +4,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Repo identity and current state
 
-The CMake project and binary are now named `reaper_reasampler`. This is **ReaSampler** — a per-project audio sample-bank capture tool. The MPE modules (`mpe_model`, `mpe_view`) have been removed. M0–M8 are complete (bank_model, peaks, capture offline+realtime, persist, bank_panel, insert, capture action family, RealtimeRecordBackend, tail T1+T2+T1-followons). Phase B multi-bank (B1–B5, B-cap), Phase D1/D2 Design View (D1–D5, D2-W1–W3-B), Phase V versioning/beta-channel (V1/V3, V4), M10 provenance + re-capture from source, Phase R Reclaim (R1–R3: prune-reconcile core, dry-run shell, guarded deletion + action + panel button), M11 in full (batch capture, action-button strip + keybinding labels, conform-on-insert verified-extant, native OS drag-out), Phase L L1 (shared LICE drawing kit: `theme`/palette module, `component_geometry` geometry helpers, `draw_kit` shell, GDI DrawText retired in `bank_panel`), Phase L L2 (dock-panel layout redesign: `action_bar` pure task-grouped layout module, full M11-aware button inventory placed by task cluster, `bank_panel` redesigned through the L1 kit), and Phase L L4 (dock-panel button layout enhancement: three-zone layout — top capture/placement/maintenance toolbar, bottom Design-View tagging/switching toolbar, footer narrow-toggle + Tail-button + Prune; `footer_bar` pure module + `footer_bar_tests`; `ActionCluster::Tagging`/`Switching` in `action_bar`) have all landed. M9 slots deferred indefinitely. The *discipline* — pure REAPER-free testable core split from REAPER-facing shells — is **preserved** throughout.
+The CMake project and binary are now named `reaper_reasampler`. This is **ReaSampler** — a per-project audio sample-bank capture tool. The MPE modules (`mpe_model`, `mpe_view`) have been removed. M0–M8 are complete (bank_model, peaks, capture offline+realtime, persist, bank_panel, insert, capture action family, RealtimeRecordBackend, tail T1+T2+T1-followons). Phase B multi-bank (B1–B5, B-cap), Phase D1/D2 Design View (D1–D5, D2-W1–W3-B), Phase V versioning/beta-channel (V1/V3, V4), M10 provenance + re-capture from source, Phase R Reclaim (R1–R3: prune-reconcile core, dry-run shell, guarded deletion + action + panel button), M11 in full (batch capture, action-button strip + keybinding labels, conform-on-insert verified-extant, native OS drag-out), Phase L L1 (shared LICE drawing kit: `theme`/palette module, `component_geometry` geometry helpers, `draw_kit` shell, GDI DrawText retired in `bank_panel`), Phase L L2 (dock-panel layout redesign: `action_bar` pure task-grouped layout module, full M11-aware button inventory placed by task cluster, `bank_panel` redesigned through the L1 kit), Phase L L4 (dock-panel button layout enhancement: three-zone layout — top capture/placement/maintenance toolbar, bottom Design-View tagging/switching toolbar, footer narrow-toggle + Tail-button + Prune; `footer_bar` pure module + `footer_bar_tests`; `ActionCluster::Tagging`/`Switching` in `action_bar`), and Phase L L5 (dock-panel button refinements: top-bar overflow menu for Batch Items/Batch Razor/Capture RT via `overflow_menu` pure module; custom LICE-kit hover-delay tooltips via `tooltip` pure module; four opposite-mode Item/Track tag buttons + Show Both on the bottom toolbar; Toggle + Activate-Arrange/Design buttons removed; grouping spacing widened — `mode_enable` pure opposite-mode enablement predicate) have all landed. M9 slots deferred indefinitely. The *discipline* — pure REAPER-free testable core split from REAPER-facing shells — is **preserved** throughout.
 
 CONTEXT.md is the authoritative spec and build roadmap. Read it first for any non-trivial task. Every REAPER API name cited there is correct-by-intent; verify argument order, types, and flag values against `vendor/reaper-sdk/sdk/reaper_plugin_functions.h` before use.
 
@@ -46,6 +46,9 @@ Key targets (see CMakeLists.txt for the full list):
 | `component_geometry_tests` | executable | Pure unit tests for `component_geometry` — no REAPER, no DAW. |
 | `action_bar_tests` | executable | Pure unit tests for `action_bar` — no REAPER, no DAW. |
 | `footer_bar_tests` | executable | Pure unit tests for `footer_bar` — no REAPER, no DAW. |
+| `overflow_menu_tests` | executable | Pure unit tests for `overflow_menu` — no REAPER, no DAW. |
+| `mode_enable_tests` | executable | Pure unit tests for `mode_enable` — no REAPER, no DAW. |
+| `tooltip_tests` | executable | Pure unit tests for `tooltip` — no REAPER, no DAW. |
 | `reaper_reasampler` | loadable module | The actual extension binary (`.dll` / `.dylib` / `.so`). |
 
 ### Beta channel build (Phase V, V4)
@@ -91,11 +94,14 @@ There is no hot-reload. Copy the built binary into REAPER's `UserPlugins/` folde
 - `component_geometry` — Phase L pure component geometry/hit-test helpers (L1): button/slider/list-row geometry + hover hit-test. No LICE or REAPER types. Mirror of `mode_switch`/`bank_grid`.
 - `action_bar` — Phase L pure task-grouped action-bar layout/hit-test (L2 + L4): clusters (Capture / Placement / Maintenance / Tagging / Switching), per-button label + keybinding micro sub-rects, whole-trailing-button overflow, point→index hit-test. `ActionCluster::Tagging` and `ActionCluster::Switching` added in L4 for the bottom Design-View toolbar. No LICE or REAPER types. Mirror of `mode_switch`/`bank_grid`/`action_buttons`.
 - `footer_bar` — Phase L pure footer layout/hit-test (L4): narrow `[Arrange|Design]` mode-toggle geometry + per-mode count label, Tail button, and Prune placement in the panel footer strip. No LICE or REAPER types. Mirror of `mode_switch` / `prune_button`.
+- `overflow_menu` — Phase L pure overflow-menu-button geometry/reserve/hit-test (L5): right-anchored More (⋯) button rect computation and hit-test for the top-toolbar overflow. No LICE or REAPER types. Mirror of `prune_button`.
+- `mode_enable` — Phase L pure opposite-mode enablement predicate (L5): given the active mode, computes per-button live/disabled state for the four Item/Track × Arrange/Design tag buttons on the bottom toolbar. No LICE or REAPER types.
+- `tooltip` — Phase L pure tooltip placement + prefix-strip (L5): custom LICE-kit hover-delay tooltip geometry and text derivation — strips the `ReaSampler:` display prefix from the registered action phrase; tooltip box width clamped to the client rect. No LICE or REAPER types.
 
 **REAPER-facing shells:**
 - `capture` — `ICaptureBackend` interface; `OfflineRenderBackend` (deterministic default) and `RealtimeRecordBackend`. Input: `CaptureRequest`. Output: finished file + populated `Sample` handed to `bank_model`.
 - `insert` — placement via `InsertMedia`; conform-to-project-tempo is an explicit opt-in flag, never silent stretching.
-- `bank_panel` — docked LICE-drawn grid: thumbnails, audition, multi-select, keyboard navigation; three-zone layout (L4): **top toolbar** = capture cluster (capture item, capture track, batch items, batch razor, capture RT) + placement cluster (insert, insert-conform) + maintenance cluster (re-capture, cancel-realtime) via `action_bar`, firing each action via `NamedCommandLookup` + `Main_OnCommand` and showing live keybinding labels via `kbd_getTextFromCmd`; **bottom toolbar** = Design View tagging + switching verbs (`ActionCluster::Tagging` / `ActionCluster::Switching`) firing the registered `VIEW_*` actions; **footer** = narrow `[Arrange|Design]` toggle · per-mode count · Tail button (cycles tail on click, proper kit button states) · set-apart `warn` Prune (rightmost) via `footer_bar`; entire panel draws through the L1 kit by palette role with hover on interactive elements, single `KitColor→LICE_pixel` boundary via `draw_kit`; OS drag-out hook (M11) initiating an OS-level copy drag when the pointer leaves the panel client rect, via `drag_out` + `drag_out_win`.
+- `bank_panel` — docked LICE-drawn grid: thumbnails, audition, multi-select, keyboard navigation; three-zone layout (L4/L5): **top toolbar** = capture cluster (Capture Item, Capture Track) + placement cluster (Insert, Insert Conform) + maintenance cluster (Re-capture, Cancel RT) via `action_bar`, each firing via `NamedCommandLookup` + `Main_OnCommand` with live keybinding labels via `kbd_getTextFromCmd`; a right-anchored **More (⋯) overflow menu button** (`overflow_menu`) opens a `TrackPopupMenu` listing Batch Items / Batch Razor / Capture RT; **hover tooltips** (`tooltip`) show the full action name with the `ReaSampler:` prefix stripped, sourced from the registered action phrase; **bottom toolbar** = four opposite-mode tag buttons (Item: Arrange / Item: Design / Track: Arrange / Track: Design — live only for the opposite of the active mode, `Disabled` otherwise via `mode_enable`) + set-apart Show Both (`VIEW_SHOW_BOTH`); Toggle and Activate-Arrange/Activate-Design buttons removed (actions stay registered); grouping `clusterGap` 24 / `buttonGap` 4; **footer** = narrow `[Arrange|Design]` toggle · per-mode count · Tail button (cycles tail on click, proper kit button states) · set-apart `warn` Prune (rightmost) via `footer_bar`; entire panel draws through the L1 kit by palette role with hover on interactive elements, single `KitColor→LICE_pixel` boundary via `draw_kit`; OS drag-out hook (M11) initiating an OS-level copy drag when the pointer leaves the panel client rect, via `drag_out` + `drag_out_win`.
 - `persist` — project ext state (`SetProjExtState` / `GetProjExtState`, namespace `"reasampler"`) ↔ `BankBook` JSON (`"banks"` key) + `ViewModeModel` JSON (`"view_state"` key) + `TailSetting` JSON (`"tail_setting"` key) + `OwnedManifest` JSON (`"owned_files"` key) + writing-version stamp (`"version"` key, written via `stampVersion()` on every `saveToActiveProject()`); project-relative path resolution. A `projectconfig` hook (`BeginLoadProjectState(isUndo)`) triggers a deferred session reload on undo/redo so Ctrl-Z/redo visibly restores book/view/tail/manifest in-session. Hosts `ReaSamplerSession::pruneDryRun()` (read-only orphan enumeration via M4 project-relative resolution) and `pruneOrphanSet()` (full-set query for the R3 delete path); supplies `referencedPaths()` + `owned().paths()` to the `prune_reconcile` pure core.
 - `view` — Design View shell: reads the folder tree via `view_tree`, snapshots flag values before parking, drives hide + CPU-park on inactive-mode leaves (`B_SHOWINTCP`/`B_SHOWINMIXER`/`B_MAINSEND`/`I_FXEN` + per-FX offline) and derived visibility on parents; restores from snapshot. Never touches master or `B_MUTE`/`I_SOLO`.
 - `track_guid` — shared `MediaTrack*` → canonical GUID-string formatter; single source of truth for membership keys used by both the view shell and the actions layer.