Track entry into tool.execute separately from tool event emission. Never-started skips retain SyntheticToolResultDetails with executed:false; in-flight aborts now use distinct interrupted metadata with execution:started so consumers do not assume no partial work occurred.
Keep both interrupt states neutral in the TUI and cover the agent metadata boundary plus rendering behavior.
Fixes#7199
A tool call aborted mid-batch to service queued steering/peer input emits a synthetic placeholder result with isError:true so the model retries it. The TUI keyed all error styling (red ✘, red frame/text) off that flag, so a normal steering skip rendered identically to a real tool failure.
Mark the skip placeholder with the existing SyntheticToolResultDetails discriminator (source: "interrupt_skipped", executed:false) and render benign skips through the neutral generic card (info glyph, dim text, neutral background), bypassing any bespoke error frame. Genuine failures keep their error styling.
Fixes#7199
roboomp