69ef56edb3
Addresses three follow-ups flagged on the first cut of this PR by static
reviewers and parallel reviewer runs:
1. Numbered plan-only stalls were treated as completed answers. A
response like `Here's my plan:\n1. Search the web\n2. Summarise`
matched both `_INTENT_SIGNAL` and the numbered-list branch of
`_HAS_ANSWER_ARTIFACT`, so the tool-forcing re-prompt was skipped.
That contradicted the PR's stated invariant that plan-only stalls
still re-prompt. The list now has to be paired with no plan framing
(no `Here's my plan` / `plan:` / `approach:`, no intent phrase
followed by a tool-action verb) to count as an artifact.
2. Closed code fences with non-alpha info strings (`python3`, `c++`,
`c#`, `objective-c`, `ts-node`, `bash-session`, `python linenums="1"`)
were not recognised by the `[a-zA-Z]*` info-string class. Complete
answers in those languages still re-prompted and could be wiped.
The info-string class is now `[^\r\n]{0,200}` and the closing fence
may be indented.
3. Bare `<!doctype` or `<html` text was treated as an artifact. A
plan-only response that mentions `<html>` in prose now no longer
bypasses the re-prompt; the HTML branch requires a closing
`</html>` (doctype prefix optional).
All `[\s\S]{...}?` runs are length-bounded so ReDoS-style adversarial
input stays linear. ReDoS guard tests cover CRLF spam and repeated
`<html ` openings without close.
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| .. | ||
| assets | ||
| auth | ||
| core | ||
| loggers | ||
| models | ||
| plugins | ||
| requirements | ||
| routes | ||
| state | ||
| storage | ||
| tests | ||
| utils | ||
| __init__.py | ||
| _platform_compat.py | ||
| colab.py | ||
| main.py | ||
| run.py | ||
| startup_banner.py | ||