feat(workspace): open selected track inserts directly (phase 90)

docs/CREATIVE_WORKFLOWS.md

@@ -0,0 +1,12 @@
+# Creative workflow additions (Phases 90–99)
+
+These features prioritize fast musical experiments and retain the existing
+control-thread preparation and project undo model. They introduce no dependency
+or project-format change. Each phase is qualified separately in ROADMAP.md.
+
+## Selected track inserts
+
+**Track → Show selected track inserts** (Ctrl+5) opens the sequencer or active
+mixer selection directly. Bus inserts are unsupported; no selection leaves the
+workspace unchanged. **View → Track inserts** still opens the rack independently.
+Ctrl+4 remains the piano-roll command, resolving the earlier shortcut collision.

docs/ROADMAP.md

@@ -2052,6 +2052,156 @@ DAWs are not claimed. See TRACK_INSERTS.md and KNOWN_LIMITATIONS.md.
 
 ---
 
+## Phase 90 — Selected Track Effect Access
+
+### Goal
+Open the sequencer or mixer selection directly in Track inserts with a dedicated shortcut, preserving the piano-roll shortcut and rejecting bus/no selection.
+
+### Tasks and acceptance criteria
+- [x] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [x] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [x] Document results and commit this phase separately.
+
+### Implementation status
+Implemented: selected sequencer/mixer track opens directly in the insert workspace with Ctrl+5; the original piano-roll Ctrl+4 is preserved. Invalid/no track leaves the view unchanged and buses reject. Baseline core suite, warning-enabled GUI build and focused selection/context/shortcut tests passed.
+
+---
+
+## Phase 91 — Duplicate Effect Slots
+
+### Goal
+Duplicate an effect adjacent to its slot with copied parameters, automation, wet amount and bypass; prepare transactionally, enforce the eight-slot limit and support undo.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
+## Phase 92 — Track Chain Clipboard
+
+### Goal
+Copy and paste independent chain metadata between tracks, with explicit replacement, undo and document-lifecycle cleanup. Clipboard operations must not load modules.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
+## Phase 93 — Effect Chain A/B Comparison
+
+### Goal
+Capture and recall two track-bound effect configurations, with clear readiness indicators, safe preparation, undo and cleanup on document replacement.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
+## Phase 94 — Creative Chain Templates
+
+### Goal
+Offer original dependency-free Slapback, Dub Echo and Ambient Space starting points using internal devices, including safe replacement and editable controls.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
+## Phase 95 — Bulk Rack Actions
+
+### Goal
+Enable all inserts, bypass all inserts or clear a chain as single undoable prepared edits, retaining output gain and respecting recording/error restrictions.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
+## Phase 96 — Live Meters in the Insert Workspace
+
+### Goal
+Display selected-track stereo sample peaks and a resettable clip indicator from the existing single backend meter reader, with clear post-fader labeling and offline/stopped handling.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
+## Phase 97 — Tap Tempo
+
+### Goal
+Provide a transport Tap button backed by a bounded C99 rolling interval estimator, with timeout/reset, sensible tempo limits and undoable project tempo adoption.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
+## Phase 98 — One-Action Audio Crossfades
+
+### Goal
+Apply matching linear boundary fades to two partially overlapping audio clips on one track, preserving source files and opposite fades. Reject ambiguous layouts transactionally and provide one undo step.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
+## Phase 99 — MIDI Chord Strumming
+
+### Goal
+Spread simultaneous chord notes in pitch order with a user-selected tick spacing and direction, preserving original ends and rejecting source overflow atomically. Expose a musical editing command with undo.
+
+### Tasks and acceptance criteria
+- [ ] Implement the workflow with bounded validation, safe preparation and documented limits.
+- [ ] Pass meaningful core and/or GUI checks, including error and undo behavior.
+- [ ] Document results and commit this phase separately.
+
+### Implementation status
+Planned.
+
+---
+
 ## Recommended Execution Order
 
 Reorder the phases when the audit reveals a blocking dependency. Do not mark a phase complete merely because code exists: its acceptance criteria must be demonstrated by builds, tests, or documented manual verification.

docs/TRACK_INSERTS.md

@@ -28,7 +28,7 @@ plugin state on seeks follows the existing host contract. Bus inserts and
 tracks containing both audio assets and MIDI reject preparation explicitly.
 Live unassigned sine monitoring remains a separate master input.
 
-Open **View → Track inserts** (Ctrl+4) and choose a track. **Add effect** offers
+Open **View → Track inserts** (or Ctrl+5 for the selected track) and choose a track. **Add effect** offers
 internal Delay/Reverb and the plugin library. The left rack shows signal order;
 the graph displays the actual generated graph compiled by playback. Wiring in
 this view is read-only: edit the rack to preserve the serial chain. The global