Before, GenericToolCell rendered its `output` through `render_compact_kv`, which
treated the entire string as one logical line and let the wrapper handle
overflow. Multi-line output (git diff --stat, todo snapshots, file lists)
ended up squashed into a single hard-wrapped blob — the screenshot in the
issue showed "Cargo.lock | 1 + crates/cli/Cargo.toml | 1 + crates/cli/src/main.rs"
all on one row.
Switch the result rendering to `render_tool_output_mode` (already used by
ExecCell) which:
- splits on `\n` first, then wraps each line independently;
- caps live view at TOOL_OUTPUT_LINE_LIMIT (= 6) rows with a "+N more lines;
press v for details" affordance;
- emits the full body in transcript view.
Threaded `RenderMode` through `ToolCell::Generic(...)` dispatch and renamed
`GenericToolCell::lines_with_motion` → `lines_with_mode(mode)` (sole caller).
Tests:
- `generic_tool_cell_preserves_multi_line_output_in_transcript` asserts each
diff-stat file lands on its own row.
- `generic_tool_cell_caps_multi_line_output_in_live_with_affordance` pins the
live cap + affordance + transcript-includes-everything contract.
Fixes#80
Hunter Bown
f342d6508e