agent: add script healing capability#2899
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Adds a `--heal` CLI flag and interactive REPL prompt to automatically diagnose and repair failing scripts using the LLM. The agent attempts to fix the script, then validates the revision in a fresh session before overwriting the original file.
Detects when a script runs successfully but returns no data (e.g., due to a stale selector). Treats this as a healable error and prompts the user to heal it with the model.
Tracks extract calls during script execution. If a list field in an extract schema returns empty across all calls, it is treated as a script error (`dry_extracts`) to trigger the heal prompt.
Tracks extract results and persists them as comments in saved scripts. This allows healing to compare replays against record-time reality.
- Add `classifyExtractFields` to share parsing between Baseline and Runtime. - Reuse a scratch arena allocator in Baseline to avoid overhead. - Simplify the retry loop in `Agent.runScriptWithHeal`.
Replaces hardcoded heuristics and programmatic baseline parsing with an LLM turn that judges if empty outputs or dry extracts indicate a broken script or legitimate sparseness. Extracts a `metaTurn` helper to share out-of-conversation LLM execution logic.
Consolidates tool execution into a shared `callTool` helper. Replaces the temporary `Suspicion` and `DryFinding` structs with `ScriptError` to streamline validation and judgment paths.
Instructs the agent to preserve, update, and add intent comments when healing scripts.
- Add `soloTurn` to run LLM verdicts without conversation history. - Swap `Recorder` instead of snapshotting during healing. - Remove `is_list` tracking from extract stats. - Simplify JSON parsing in `parseVerdict`.
- Swap `self.baseline` during `healLoop` to prevent state leakage. - Use `defer` with a `keep_revision` flag for robust temp file cleanup. - Avoid rolling back conversation state on meta-turn cancellation. - Generalize `capToolOutput` to `capOutput` and use it for details. - Remove persistent scratch arena from `Baseline`.
arrufat
marked this pull request as ready for review
July 21, 2026 07:53
karlseguin
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Jul 22, 2026
karlseguin
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Don't really understand, a few simple comments...feel free to ignore. Looks fine mechanically.
Co-authored-by: Karl Seguin <karlseguin@users.noreply.github.com>
# Conflicts: # src/script/Runtime.zig
arrufat
marked this pull request as draft
July 24, 2026 14:23
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Adds a
--healCLI flag and interactive REPL prompt to automatically diagnose and repair failing scripts using the LLM. The agent attempts to fix the script, then validates the revision in a fresh session before overwriting the original file.