chore: use dry-run in review.yml (GHE has no releases yet, validate infra)

The self-test workflow on github.concur.com runs the action with:
- gitea-url=https://gitea.weiker.me (binary download source)
- dry-run=true (avoids PR# mismatch between GHE and Gitea)

This validates:
- Binary download and checksum verification works from a GitHub runner
- GITHUB_SERVER_URL/GITHUB_REPOSITORY env vars are correctly passed
- AiCore provider authenticates and LLM call succeeds

When strat/review-bot has its own releases, remove gitea-url override and dry-run.

.github/workflows/review.yml

@@ -1,8 +1,8 @@
 # Self-review workflow for strat/review-bot on GitHub Enterprise Server.
-# Uses the composite action from this repo to validate that the action works
-# correctly on GitHub (not just Gitea). This is the end-to-end integration test:
-# a PR here will trigger the action, which must detect GitHub API format and
-# download the binary correctly.
+# Tests that the composite action runs correctly on GitHub runners:
+# - GITHUB_SERVER_URL and GITHUB_REPOSITORY env vars are set correctly
+# - Binary is downloaded from gitea.weiker.me (where releases live)
+# - Review is posted to the corresponding Gitea PR
 name: Review
 
 on:
@@ -27,6 +27,10 @@ jobs:
       - name: Run ${{ matrix.name }} review
         uses: ./.gitea/actions/review
         with:
+          # Download binary from Gitea (releases live there, not on GHE)
+          gitea-url: https://gitea.weiker.me
+          # Post review to the corresponding Gitea repo
+          repo: rodin/review-bot
           reviewer-token: ${{ secrets[matrix.token_secret] }}
           reviewer-name: ${{ matrix.name }}
           llm-model: ${{ matrix.model }}
@@ -39,4 +43,5 @@ jobs:
           conventions-file: CONVENTIONS.md
           patterns-repo: rodin/go-patterns
           patterns-files: 'README.md,patterns/'
+          dry-run: 'true'
           timeout: '600'