fix(vscode): preserve inline review drafts across diff refreshes

[marius-kilocode]

Inline review comments could disappear while they were still being written because diff refreshes replace disposable annotation DOM nodes. The same loss could happen when moving between Agent Manager sidebar and fullscreen review surfaces.

Preserve unfinished drafts and edits in lightweight in-memory composer metadata outside the textarea DOM. Diff renderers restore that metadata whenever annotations are rebuilt, Agent Manager review surfaces share the active composer during view transitions, and context changes clear transient state so drafts cannot leak between worktrees. Typing remains non-reactive, avoiding diff rerenders on every keystroke.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

The implementation is clean and correct. Key design observations:

• trackText attaches a fresh "input" listener to each new textarea DOM node. Since Pierre discards the old textarea element, the old listener and its closure are eligible for GC along with the discarded node — no accumulation.
• dispatchEvent(new Event("input", { bubbles: true })) in speech insertion correctly ensures speech-inserted text propagates through the trackText listener to update meta.text.
• annotationsForFile side-effects (writing back to composer().draft/composer().edit) are intentional and consistent — the function is called during render and uses the stable draftMeta/editMeta refs as the source of truth.
• Context change clears are layered defensively: AgentManagerContent clears via selection change, and DiffPanel/FullScreenDiffView clear via sessionKey change. The double-clear when both fire is harmless.
• Tests exercise real buildFileAnnotations and ReviewComposer behaviour without mocking.

Files Reviewed (6 files)

• .changeset/steady-review-drafts.md
• packages/kilo-vscode/tests/unit/review-comments.test.ts
• packages/kilo-vscode/webview-ui/agent-manager/AgentManagerApp.tsx
• packages/kilo-vscode/webview-ui/agent-manager/DiffPanel.tsx
• packages/kilo-vscode/webview-ui/agent-manager/FullScreenDiffView.tsx
• packages/kilo-vscode/webview-ui/agent-manager/review-annotation-speech.tsx
• packages/kilo-vscode/webview-ui/agent-manager/review-annotations.ts

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_{Reviewed by claude-4.6-sonnet-20260217 · 666,067 tokens}

_{Review guidance: REVIEW.md from base branch main}

[imanolmzd-svg]

Does this change cover the diff view that opens from sidebar chat as well?

[marius-kilocode]

The core fix applies to the sidebar-chat Changes view as well