Add clipboard copy, cut and paste

[goofmint]

fix#91

Copy, cut and paste, wired end to end: a clipboard namespace on the extension API, a core service backing it, the three commands in editor-core, and the terminal seams that connect them to OSC 52 and bracketed paste.

Reading the system clipboard is not portable, so it isn't attempted

OSC 52 has no portable read. The service keeps an internal buffer that copy/cut write to and paste reads from, and writes through to the system clipboard via renderer.copyToClipboardOSC52 when the terminal supports it (clipboard.useSystemClipboard, default true). Text arriving from outside the editor comes in through bracketed paste instead — OpenTUI's PasteEvent, decoded as UTF-8.

A write that the terminal rejects or that throws is logged through HostLog and swallowed; it never propagates past the service boundary and never rejects the promise.

ctrl+c is deliberately not bound

ctrl+x → cut and ctrl+v → paste are declared. Copy is a command with no default keybinding — reachable from the command palette and tecode.commands.execute, but not on ctrl+c.

ctrl+c is not usable as a keybinding at all today. createCliRenderer() puts stdin in raw mode and OpenTUI's exitOnCtrlC (default true) intercepts the raw \x03 byte and calls CliRenderer.destroy() directly, before it ever reaches the keymap layer — the same mechanism renderShell.tsx documents for why Ctrl+C never becomes a real SIGINT. It is also currently the only way to quit tecode (Issue #84, Req 12.3): no workbench.action.quit or equivalent exists in any manifest. Binding it here would be a silent no-op at best, and taking it over would need exitOnCtrlC: false plus a new quit command — a change to how the editor is quit, which is the owner's call, not this PR's. manifest.ts says all of this where the command is declared, so the next reader does not "fix" it by adding a binding.

Paste is one undo step

insertText on EditorInputRouter bypasses the single-code-point restriction in classifyKeyEvent/isPrintableSequence, and a multi-cursor, multi-line paste becomes oneapplyEdits call inside one transaction — not one per line, and not character-by-character through the key path.

Shape

• @tecode/api: ClipboardNamespace (read/write) on Tecode
• packages/core/src/clipboard/: createClipboard(deps) — internal buffer, injectable OSC 52 writer, live useSystemClipboard flag; createClipboardStub() for the no-backing case, following createFileSystem's shape
• packages/cli: ShellRenderDeps gains onClipboardWriterReady / onPaste, so CliRenderer still is not exposed; keyRouting.ts routes paste to insertText
• packages/builtin/editor-core/clipboard.ts: pure copy/cut/paste builders over the existing buildEditBatch / buildInsertEdit

Validation

bun test 1801 pass / 1 skip / 0 fail (up from 1743 on main); bunx tsc --noEmit clean; bun run lint clean. grep confirms no ctrl+c binding exists anywhere in packages/ or samples/.

Branch cut from e14293f, so main was merged in to pick up #95 and #96 — no conflicts, and the full suite passes on the merged result.

Three behavioural guarantees were mutation-tested independently of the implementing agent; each fails when the implementation is broken:

mutation	test that catches it
remove the empty-selection guards	empty selections array (no active editor): copy/cut/paste never call applyEdits or touch the clipboard
make an OSC 52 write failure rethrow	an OSC 52 write that THROWS is logged, swallowed, and write() still resolves… (+ the no-log variant)
loop applyEdits once per edit	a multi-line paste across multiple cursors is a SINGLE applyEdits call (one undo step), not one per line

🤖 Generated with Claude Code

https://claude.ai/code/session_01WELSsojQQL1cTAR5iUUsTK

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Generated by Claude Code

Summary by CodeRabbit

• 新機能
  • エディターでコピー、カット、貼り付けを利用できるようになりました。
  • 複数選択や複数行テキストに対応しました。
  • 端末が対応している場合、システムクリップボードと同期できます。
  • clipboard.useSystemClipboard 設定を追加しました。
  • tecode.clipboard API と貼り付け入力処理を追加しました。
• バグ修正
  • 複数行貼り付け後のカーソル位置を正しく更新するよう改善しました。
  • 編集操作を単一の Undo 単位として扱うようにしました。
  • 貼り付け時の文字コード処理を改善しました。

[coderabbitai]

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ℹ️ Recent review info

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Configuration used: Organization UI

Review profile: CHILL

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Run ID: 3d860248-3e0c-4e46-9381-6d756db3f7fc

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Reviewing files that changed from the base of the PR and between ddf90e1 and 35270db.

📒 Files selected for processing (3)

• packages/cli/src/renderShell.test.ts
• packages/cli/src/renderShell.tsx
• packages/core/src/api/tecode-module.d.ts

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Walkthrough

クリップボード API と内部バッファを追加しました。エディターにコピー、カット、ペーストを追加しました。CLI に OSC 52 同期、端末ペースト、設定同期、公開 API 接続を追加しました。複数行貼り付け後の位置変換も更新しました。

Changes

クリップボード機能

Layer / File(s)	Summary
クリップボード API と内部バッファ packages/api/src/*, packages/core/src/api/*, packages/core/src/clipboard/*, packages/core/src/index.ts, packages/core/src/api/tecode-module.d.ts, packages/builtin/*/index.test.*	tecode.clipboard API と内部バッファを追加しました。OSC 52 同期、失敗時のログ処理、未接続時のスタブ、公開エクスポートを実装しました。
エディターのコピー、カット、ペースト packages/builtin/editor-core/clipboard.ts, packages/builtin/editor-core/clipboard.test.ts, packages/builtin/editor-core/index.ts, packages/builtin/editor-core/index.test.ts, packages/builtin/editor-core/manifest.ts, samples/settings.json	選択テキストのコピー、選択範囲のカット、複数選択へのペーストを追加しました。コマンド、キー割り当て、設定、Undo 単位のテストを追加しました。
複数行貼り付けと位置変換 packages/core/src/editor/inputRouter.ts, packages/core/src/editor/inputRouter.test.ts, packages/core/src/editor/positionTransform.ts, packages/core/src/editor/positionTransform.test.ts	insertText による一括編集を追加しました。複数行編集後のカーソル位置変換を編集順序に依存しない処理へ更新しました。
CLI と端末イベントの接続 packages/cli/src/main.ts, packages/cli/src/renderShell.tsx, packages/cli/src/keyRouting.ts, packages/cli/src/keyRouting.test.ts, packages/cli/src/main.test.ts, packages/cli/src/renderShell.test.ts, packages/cli/src/shutdownOnDestroy.test.ts	Clipboard サービスを composition root と公開 API に接続しました。OSC 52 writer、UTF-8 ペーストイベント、BOM を保持するデコーダー、設定同期、shutdown dispose を追加しました。

Estimated code review effort: 4 (Complex) | ~45 minutes

Merge Risk:🟡 Moderate · up to ddf90

This PR adds clipboard commands and terminal paste integration, but the current version can break extension builds that import the new API, prevents the sample settings from loading, and alters pasted text when it begins with a BOM. These bounded correctness issues should be fixed or explicitly accepted before merging.

Sequence Diagram(s)

sequenceDiagram
participant TerminalRenderer
participant CLI
participant Clipboard
participant EditorInputRouter
TerminalRenderer->>CLI: Paste event bytes
CLI->>CLI: decodePastedBytes(bytes)
CLI->>EditorInputRouter: insertText(text)
EditorInputRouter->>EditorInputRouter: apply edits and update selections
CLI->>Clipboard: Set OSC 52 writer
Clipboard->>TerminalRenderer: OSC 52 clipboard write

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Suggested reviewers:claude

Poem

うさぎはコピーをかじったよ
カットの編集はひとまとまり
ペーストの文字が跳ねてくる
OSC 52 が空へ届く
クリップボードが静かに光る

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 54.17% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 48 functions across 29 files. (1 skipped:…	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	タイトルは、クリップボードのコピー、カット、貼り付けという主な変更内容を明確かつ簡潔に示しています。
Linked Issues check	✅ Passed	Issue #91 のコピーおよび貼り付け要件を満たしています。クリップボード API、内部バッファ、コピー・カット・貼り付けコマンド、マルチカーソル貼り付け、端末連携を実装しています。
Out of Scope Changes check	✅ Passed	変更は Issue #91 のクリップボード機能と、その実装に必要な CLI、エディター、API、テスト、設定に限定されています。複数行貼り付けに必要な positionTransform の修正も目的に関連しています。

Full details: Docstring Coverage

Explanation

Docstring coverage is 54.17% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 48 functions across 29 files. (1 skipped: 1 unsupported.)

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[goofmint]

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Actionable comments posted: 3

🤖 Prompt for all review comments with AI agents

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Inline comments:
In `@packages/api/src/namespaces.ts`:
- Line 530: 同期して、仮想「tecode」モジュールの宣言にClipboardNamespaceの型importとexport const
clipboard: ClipboardNamespaceを追加してください。createTecodeApiのclipboard公開内容と一致するnamed
exportにし、既存の宣言は変更しないでください。
Apply the same fix in `@packages/core/src/index.ts` at line 330:
同じ仮想モジュール宣言の不足を指摘している重複箇所です。
In `@packages/cli/src/renderShell.tsx`:
- Around line 291-296: Update the paste handling in renderShellToTerminal so its
TextDecoder is configured with ignoreBOM: true, preserving a leading U+FEFF when
decoded bytes are passed to onPaste and EditorInputRouter.insertText. Add a
regression test covering paste input that begins with a UTF-8 BOM.
In `@samples/settings.json`:
- Around line 45-53: 設定キー clipboard.useSystemClipboard
をルート設定オブジェクト内へ移動し、最終の閉じ括弧の前に配置してください。直前の設定項目との区切りカンマとルートオブジェクトの閉じ括弧を復元し、JSON
として解析可能な構造にしてください。

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Configuration used: Organization UI

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📥 Commits

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📒 Files selected for processing (30)

• packages/api/src/index.ts
• packages/api/src/namespaces.ts
• packages/builtin/command-palette/index.test.ts
• packages/builtin/editor-core/clipboard.test.ts
• packages/builtin/editor-core/clipboard.ts
• packages/builtin/editor-core/index.test.ts
• packages/builtin/editor-core/index.ts
• packages/builtin/editor-core/manifest.ts
• packages/builtin/explorer/index.test.tsx
• packages/builtin/keybindings-editor/index.test.ts
• packages/builtin/statusbar/index.test.ts
• packages/cli/src/keyRouting.test.ts
• packages/cli/src/keyRouting.ts
• packages/cli/src/main.test.ts
• packages/cli/src/main.ts
• packages/cli/src/renderShell.tsx
• packages/cli/src/shutdownOnDestroy.test.ts
• packages/core/src/api/create.clipboard.test.ts
• packages/core/src/api/create.ts
• packages/core/src/api/index.ts
• packages/core/src/api/stubs.ts
• packages/core/src/clipboard/clipboard.test.ts
• packages/core/src/clipboard/clipboard.ts
• packages/core/src/clipboard/index.ts
• packages/core/src/editor/inputRouter.test.ts
• packages/core/src/editor/inputRouter.ts
• packages/core/src/editor/positionTransform.test.ts
• packages/core/src/editor/positionTransform.ts
• packages/core/src/index.ts
• samples/settings.json

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