[dotCooCoo]

On main, the Strip Silence window has only a Strip button, and edit.strip_silence can only remove the silence. The reference guide's "Stripping Silence from Clips" section (Pro Tools Reference Guide 2020.12, Chapter 41, pages 925 to 927) also describes Extract, Rename and Separate buttons. This pull request adds two of them: "Extract Clears the audio and leaves the silent portions of the track" and "Separate Separates clips based on the boundaries detected by Strip Silence". Rename is not part of it. The guide: https://web.archive.org/web/20210805202452/https://resources.avid.com/SupportFiles/PT/Pro_Tools_Reference_Guide_2020.12.pdf

• Extract: removes the parts of the selection that hold audio, with their clip start and end pads, and keeps the silent parts.
• Separate: separates the clips at the same points Strip does (the selection's edges and the edges of each part that holds audio) without removing any clip.
• edit.strip_silence takes mode: strip (the default, unchanged), extract or separate. An unknown mode, or a mode that is not a string, is an error and leaves the track unchanged.
• Enter on a focused Extract or Separate runs that button. Enter presses Strip only when neither was clicked.
• The Minimum Strip Duration slider goes up to 4,000 ms, the range the guide gives. Before, it stopped at 2,000 ms.
• ROADMAP.md gets a progress log line, a revision table row and a new header date.

New tests. On main the engine and integration tests that check Extract, Separate and the mode param fail, the dialog unit test does not compile (it calls the new strip_silence_action), and the two that check Strip pass:

• strip_keeps_the_audio_and_removes_the_silence (engine): on a clip of tone, silence and tone, Strip keeps the two tones. It passes on main.
• extract_keeps_the_silence_and_removes_the_audio (engine): Extract keeps only the second of silence.
• separate_cuts_at_the_silence_and_removes_nothing (engine): Separate leaves three clips that cover the whole clip.
• an_unknown_strip_mode_is_refused (engine): an unknown name, null, true and 1 are each refused.
• strip_silence_buttons_send_strip_extract_and_separate (ui-egui): each button sends its mode, and on the demo's Kick track Strip and Extract keep opposite parts.
• strip_silence_extract_keeps_what_strip_removes (ui-egui, through the app).
• strip_silence_separate_cuts_the_clips_and_removes_nothing (ui-egui, through the app).
• enter_on_a_focused_separate_separates_and_does_not_strip (ui-egui, through the app).
• strip_silence_strip_removes_the_silence (ui-egui, through the app): the Strip button gives the command's result. It passes on main.

Checks, with SOUNDCRAFT_NO_SYSTEM_PLUGINS=1 set for the tests:

• cargo test -p soundcraft-engine --lib strip_tests: 6 passed
• cargo test -p soundcraft-ui-egui --lib --test it strip_silence: 1 + 4 passed
• cargo test -p soundcraft-engine -p soundcraft-ui-egui --lib: 282 + 131 passed, 0 failed
• cargo clippy -p soundcraft-engine -p soundcraft-ui-egui --all-targets --keep-going -- -D warnings -A unused-mut: no warnings (the allowed unused_mut at crates/engine/src/autosave.rs:189 is on main on Windows)
• cargo fmt --all -- --check: clean
• cargo xtask assets and cargo xtask layers: ok

On Windows 11 (x86-64) with rustc 1.99.0, on 1e9a0e9 (on top of main at aa74bff) with #1017 and #1018 merged in, and #998 merged without its crates/engine/src/io.rs and xtask/src/main.rs changes (they conflict with main), with SOUNDCRAFT_NO_SYSTEM_PLUGINS=1 set:

• cargo xtask ci passes its 7 steps: 1,280 tests passed, 0 failed, 1 ignored.

git merge-tree reports no conflicts with main at ee050db. With #1036 (Unloop dialog), #1030 (Clip Looping) or #1016 (Vari-Fi) merged first, only ROADMAP.md conflicts: each changes its header line and adds a line at the top of its progress log and of its revision table.

Summary by CodeRabbit

• New Features
  • The Strip Silence dialog offers Strip, Extract, and Separate actions for processing audio around detected silence.
  • Separate divides audio at detected boundaries without removing audio; Strip and Extract retain opposite portions.
  • The minimum-duration setting can now be adjusted up to 4,000 ms.
  • Each action uses the dialog’s current threshold, minimum duration, and padding settings.

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Reviewing files that changed from the base of the PR and between 0ca492e and 1e9a0e9.

Files selected for processing: 2

• crates/engine/src/cmd/edit.rs
• crates/engine/src/io.rs

Files skipped from review as they are similar to previous changes: 2

• crates/engine/src/cmd/edit.rs
• crates/engine/src/io.rs

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Walkthrough

Strip Silence now supports Strip, Extract, and Separate modes through the engine command and UI dialog. The dialog’s minimum-duration slider maximum is 4,000 ms. Engine and UI tests cover mode behavior and dialog interactions.

Changes: Strip Silence modes

Layer / File(s)	Summary
Mode-aware silence processing crates/engine/src/io.rs, crates/engine/src/cmd/edit.rs	The command accepts an optional mode and defaults to Strip. The engine supports Strip, Extract, and Separate. Tests cover clip outcomes and invalid modes.
Dialog actions and validation crates/ui-egui/src/dialogs.rs, crates/ui-egui/tests/it/*, ROADMAP.md	The dialog provides three actions and sets the minimum-duration slider maximum to 4,000 ms. Tests cover dialog results, keyboard activation, and clip duration. The roadmap records the change and unchanged readiness estimates.

Priority: Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant Dialog as Strip Silence dialog
  participant Command as edit.strip_silence
  participant Engine as strip_silence
  Dialog->>Command: mode, threshold, duration, and padding
  Command->>Engine: parsed mode and processing parameters
  Engine-->>Command: processed range count

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Suggested reviewers: echelon

Merge Risk: Minimal · up to 1e9a0

Extract and Separate follow the inspected selection and keyboard behavior. No identified issue blocks merging after normal checks.

Security architecture risk: Minimal · up to 0ca49

The new actions operate through the existing editing command, retain its track and selection scope, and remain undoable. The reviewed changes do not introduce a new privilege boundary or materially expand security exposure.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — The changed operation affects clips on tracks resolved by the existing command parameters within the current session. Its maximum edit scope is not limited to one track, but the new modes do not broaden the existing track-selection authority.

Trust Boundaries and Controls

• observed — Caller-supplied mode strings select among existing playlist-editing operations rather than becoming executable commands or resource identifiers. Unknown strings fail before session mutation, and the dialog supplies fixed recognized strings through the same command path.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 32.14% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 28 functions across 5 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly summarizes the main changes: Extract preserves silence, and Separate cuts clips without removing them.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

Prompt to fix review comments

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Inline comments:
Review comments at @crates/engine/src/cmd/edit.rs:
- Around line 799-801: Update the mode handling in edit.strip_silence to
distinguish an absent mode from an explicitly supplied value: keep Strip as the
default only when mode is absent, parse string values with StripMode::from_id,
and reject explicit non-string values before any mutation.

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Files selected for processing: 6

• ROADMAP.md
• crates/engine/src/cmd/edit.rs
• crates/engine/src/io.rs
• crates/ui-egui/src/dialogs.rs
• crates/ui-egui/tests/it/main.rs
• crates/ui-egui/tests/it/strip_silence_dialog.rs

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