[ex3ndr]

Scope

One Android Happy Agent/Cloud tool-row improvement. Legacy KnownTools rendering is unchanged.

• Project a short builtin summary from call arguments before building ToolUse: description first, then the shared tool-specific explanation/title/name/path/pattern/query/url fallbacks. Ignore blank/non-string values, collapse Unicode whitespace, cap at 120 Unicode code points without splitting surrogate pairs.
• Render the summary without a redundant verb, preserving running/failed state, glyphs, diff counts, attachments, and detail navigation. Existing specialized fallbacks remain when there is no summary.
• Keep MCP server/tool identity and semantic input descriptions separate; preserve double underscores within the MCP tool slug.
• Fetch the full details of completed presented calls even when compact history retained description-only arguments. The existing once-only fetch guard remains.

Verification

• Androids debug and instrumentation APK builds passed.
• Focused projection, normalization, ToolWords, row layout, compact-history/full-detail, and rich detail tests passed.
• Network-free emulator fixture passed: labeled Python/shell/patch/terminal calls, running/failed state, MCP identity, and tapping a label to open the unchanged full command/output.
• Full Android/crypto suite passed: 3,775 tests, 55 skipped, zero failures/errors.
• Production live check intentionally deferred until the parent confirms deployment of the description/history-projection server changes. Approved target is the existing qa-batch-76eca2 login; Python can run without a machine, shell only if a compute is already attached. No compute attachment/enrollment is authorized or attempted.
• No Play preview, release, signing or distribution change.