[johnnyhuy]

Tool call cards now keep the full tool input and render it as a separate Input section above Output when expanded. Previously the input was reduced to a one-line summary, edit old/new text was dropped entirely, and unknown tools were truncated to 120 characters.

Part of #2
Closes #35

What changed:

• timeline.ts keeps a formatted input on each tool entry, from both archived messages and live tool_execution_start events. bash shows the command, read/write/edit show the path plus content or old/new text, and other tools show pretty-printed arguments with no truncation. The header one-line summary is unchanged.
• The expanded card in WorkbenchControls.tsx renders labelled Input and Output sections. Running, Done, and Failed states and collapsed-by-default behaviour are unchanged.

Verified:

• bun install --frozen-lockfile passed
• bun run lint passed, 0 warnings and 0 errors
• bun run typecheck passed across renderer, main, and preload configs
• bun run test:unit passed, 71 tests including new keeps full edit input with old and new text and does not truncate long input for other tools
• bun run test:integration passed, 41 tests including new ToolCard.test.tsx checks that Input and Output render as distinct sections and that a running tool shows Waiting for output
• mise run build passed
• bun run test:e2e passed, 43 tests across 5 files against the real Electron app

Proof:

• Capture method (b) succeeded. A scripted Playwright capture launched the built app against a fixture session containing an edit call, expanded the card, and saved .tmp/proof/tool-card-input.png. The capture log recorded section headings ["Input","Output"] and card text showing the path, Old: const before = 1;, New: const after = 2;, and output Edited app.ts successfully. The screenshot shows the same expanded card in the running app. The PNG is kept under .tmp/proof/ locally and is not committed, matching the scratch-capture rule for this repo.
• Capture method (a) also succeeded via the full e2e run above.

Known gaps and follow-ups:

• No diff rendering for edit or write input yet, and no copy button or output truncation control. Those remain follow-up slices on Render tool calls as interactive cards #2.
• Parent Render tool calls as interactive cards #2 stays open. This slice covers inspecting full input only.