The detection/follow core for the live-tail sub-card, with the UI wiring
to follow. Claude Code runs every Bash tool itself and clide only sees the
final tool_result block — we can't mirror the running process, so instead
we detect a file-backed source the command follows and open our own
read-only follower on the same file.
- bash_tail_source.dart: detectBashTailSource() parses a Bash command for a
single, safe, file-backed source (tail/cat/less with one file arg, inside
the workspace via resolveUnderRoot). Returns null for a pipe-into-tail, a
redirect, two files, or a path outside the repo — the caller then shows a
"nothing to follow" note. bashHasTailIntent() gates WHEN the segment
appears: v1 triggers on `tail`/follow-flags only, so ordinary cat/ls/git
cards stay clean (cat/less remain detectable for later).
- file_tail_follower.dart: a polling, read-only `tail -f`-style follower
(no subprocess, no touching Claude's command) that emits the trailing
window then appended deltas, and re-reads from the top on truncation.
Tested: 19 parser cases (incl. the `git push | tail -25` and outside-
workspace null cases), the intent predicate, and the follower (initial
window / appended delta / missing file / rotation / start / stop).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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