fix(input): allow escape as a prefix-mode keybinding

[fraidev]

Hey!

Esc always canceled prefix mode before keybinds ran, so copy_mode = "prefix+esc" (like tmux bind Escape copy-mode) never worked even though the config accepted it.

This treats Esc as a normal prefix RHS when bound; unbound Esc still cancels prefix mode.

Happy to adjust anything if needed.

[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

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Run ID: 387be5fd-2504-4bf8-93a8-f8463b6c2133

📥 Commits

Reviewing files that changed from the base of the PR and between 2c7990b and 199e2eb.

📒 Files selected for processing (4)

• docs/next/CHANGELOG.md
• docs/next/website/src/content/docs/configuration.mdx
• docs/next/website/src/content/docs/ja/configuration.mdx
• docs/next/website/src/content/docs/zh-cn/configuration.mdx

🚧 Files skipped from review as they are similar to previous changes (4)

• docs/next/CHANGELOG.md
• docs/next/website/src/content/docs/zh-cn/configuration.mdx
• docs/next/website/src/content/docs/configuration.mdx
• docs/next/website/src/content/docs/ja/configuration.mdx

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📝 Walkthrough

Walkthrough

Escape now supports configured prefix-mode bindings through esc or escape. Unbound Escape still exits prefix mode. Tests cover parsing, dispatch, fallback behavior, and copy-mode entry. Documentation describes the updated behavior in English, Japanese, and Chinese.

Changes

Escape prefix bindings

Layer / File(s)	Summary
Escape key alias parsing src/config/keybinds.rs	Tests verify case-insensitive esc and escape aliases for prefix bindings.
Prefix dispatch and fallback src/app/input/navigate.rs	Prefix handling dispatches configured Escape bindings before using unbound Escape to exit prefix mode. Tests cover copy-mode entry and cancellation.
Documented Escape behavior docs/next/CHANGELOG.md, docs/next/website/src/content/docs/*/configuration.mdx	The changelog and configuration guides document Escape aliases, prefix bindings, and fallback behavior.

Estimated code review effort: 2 (Simple) | ~10 minutes

Sequence Diagram(s)

sequenceDiagram
  participant User
  participant PrefixMode
  participant KeybindingResolver
  participant CopyMode
  User->>PrefixMode: Press prefix then Escape
  PrefixMode->>KeybindingResolver: Resolve configured Escape binding
  KeybindingResolver->>CopyMode: Execute copy-mode action
  PrefixMode-->>User: Exit prefix mode when Escape is unbound

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Possibly related PRs

• herdrdev/herdr#2340: Both PRs refine Escape cancellation and key-dispatch behavior in src/app/input/navigate.rs.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the primary change: allowing Escape as a prefix-mode keybinding.
Description check	✅ Passed	The description accurately explains the Escape binding change and its fallback behavior when unbound.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[greptile-apps]

Greptile Summary

This PR allows Escape to participate in normal prefix-mode binding dispatch while preserving cancellation when it is unbound.

• Removes the unconditional Escape short-circuit before prefix action resolution.
• Adds runtime and configuration tests for prefix+esc and prefix+escape.
• Documents the new behavior in English, Japanese, and Simplified Chinese configuration guides and the changelog.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
src/app/input/navigate.rs	Routes Escape through normal prefix binding resolution and retains unmatched-key cancellation, with tests covering bound and unbound behavior.
src/config/keybinds.rs	Adds configuration coverage confirming case-insensitive esc and escape aliases resolve to a prefix Escape trigger.
docs/next/website/src/content/docs/configuration.mdx	Documents Escape aliases and the distinction between bound action dispatch and unbound cancellation.
docs/next/website/src/content/docs/ja/configuration.mdx	Updates the Japanese configuration guide with the new prefix-Escape behavior.
docs/next/website/src/content/docs/zh-cn/configuration.mdx	Updates the Simplified Chinese configuration guide with the new prefix-Escape behavior.
docs/next/CHANGELOG.md	Records support for Escape as a prefix-mode right-hand-side key.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
  A[Escape pressed in Prefix mode] --> B{Prefix binding matches?}
  B -->|Yes| C[Execute configured action]
  B -->|No| D[Leave Prefix mode]

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