* feat: add size caps for PR diff, fetch_url, Slack threads, pagination, message queue
Per-source byte/token caps with explicit truncation markers to prevent
unbounded payloads from blowing up LLM context/memory.
- reviewer_diff.py: cap PR diff at 200K chars with head+tail truncation
- fetch_url.py: cap markdownify output at 100K chars
- slack.py: cap thread message fetch at 500 messages
- github_comments.py: cap _fetch_paginated at 50 pages
- thread_ops.py: cap queued messages at 100 (drop oldest)
Closes OPE-51
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
* fix: compute diff line set from full diff, keep most recent Slack messages
Address PR review comments:
1. Truncated diffs rejected valid findings: fetch_pr_diff now returns the
full diff; truncate_diff is called separately in reviewer.py so the
line set used for add_finding/publish_review validation is computed
from the complete diff, not the truncated prompt text.
2. Slack cap dropped recent thread context: fetch_slack_thread_messages
now keeps the most recent SLACK_THREAD_MAX_MESSAGES messages (was
keeping the oldest). The tool surfaces a truncation marker in the
formatted output so the LLM knows the thread was truncated.
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
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Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
