fix: lazy load chat diffs

[kilo-code-bot]

Summary

• Keep chat diff summaries lightweight by stripping full file contents from message summaries and session diff events.
• Lazily fetch full per-message diffs only when chat changes are expanded, then release them when collapsed.

Related to #8607.

[kilo-code-bot]

WARNING: Normalize summary diff paths before storing them

SessionSummary.diff({ messageID }) now runs clean() and unquotes git-escaped filenames, but summarizeMessage() still stores slim(diffs) with the raw computeDiff() paths. In the webview, fullByFile().get(diff.file) uses the summary filename as the lookup key, so files whose paths are quoted/escaped by git (for example paths with spaces or non-ASCII characters) will never find their loaded diff and will stay on the "no changes" placeholder. Store the same normalized filename here as the lazy-load path.

[kilo-code-bot]

Code Review Summary

Status: 1 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/opencode/src/session/summary.ts	127	Lazy-loaded per-message diffs can fail to match summary entries for git-escaped paths

Fix these issues in Kilo Cloud

Other Observations (not in diff)

No additional observations.

Files Reviewed (10 files)

• packages/kilo-vscode/src/KiloProvider.ts - 0 issues
• packages/kilo-vscode/src/services/cli-backend/connection-utils.ts - 0 issues
• packages/kilo-vscode/tests/unit/connection-utils.test.ts - 0 issues
• packages/kilo-vscode/webview-ui/src/components/chat/VscodeSessionTurn.tsx - 0 issues
• packages/kilo-vscode/webview-ui/src/context/session.tsx - 0 issues
• packages/kilo-vscode/webview-ui/src/types/messages.ts - 0 issues
• packages/opencode/src/session/index.ts - 0 issues
• packages/opencode/src/session/revert.ts - 0 issues
• packages/opencode/src/session/summary.ts - 1 issue
• packages/opencode/test/kilocode/session-summary.test.ts - 0 issues

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_{Reviewed by gpt-5.4-20260305 · 1,483,536 tokens}