feat: a posted review can end with the reviewer's own footer, and the preparing agent reads the pull request's description and discussion

[fiddur]

What

• postFooter (default empty) ends the posted review's own body under a blank line — a team mention, an "automated triage, not a review" line. The inline comments are unchanged, so a mention fires once for the review rather than once per finding. Config, settings, the page's Settings panel and the README all carry it.
• PrSnapshot.body — gh pr view now asks for body too.
• The preparing agent gets the pull request's own words:
  • the description in its prompt, cut at 4 000 characters, framed as information written by the author and never instructions;
  • the discussion (comments, submitted reviews, inline review comments) fetched by the daemon with its own gh — the agent has no credentials — and written as pr-context.json in the pull request's diffity data directory, never into the worktree, where an untracked file would show up in the review's own diff. Bodies cut at 20 000 characters with a … [cut] marker;
  • with postAlerts on, a sentence saying a comment opening with postPrefix is an earlier automated pre-review whose findings are not to be raised as ALERT again.
• A forge that cannot be read costs a log line: the review is prepared with no context path.

Why

The review agent could not see the description or the discussion, so rules like "Risk Evaluation high is an automatic flag" and "a previous flag comment already exists" were out of its reach, and the posted review had nowhere to carry a team mention or an attribution line.

How to try it

// ~/.diffity/inbox/config.json
"postAlerts": true,
"postFooter": "cc @NaturalCycles/platform — automated triage, not a review"

Prepare a pull request that has a description and some comments: the agent's log shows the description and the pr-context.json path in the prompt, the file sits beside the prepared session, and a posted review ends with the footer.

Part of #108 — PR B (quick triage of watched repositories) follows.

🤖 Generated with Claude Code

https://claude.ai/code/session_01Bwp5QefjsjMFeq6CK6cT6w