chore(pr): add .gitea/pull_request_template.md (pragent workflow)

Auto-loaded by Gitea on every new PR. Lists the surfaces and risks
pragent scores you on; tells the author to add the AI-REVIEW label
to trigger a bot review.

.gitea/pull_request_template.md

@@ -0,0 +1,53 @@
+## What
+
+<!-- 1-2 sentences. What does this PR change? -->
+
+## Why
+
+<!-- Link the issue, design doc, or chat thread. Without a "why" the reviewer
+has to guess whether the change is wanted at all. -->
+
+Refs: #<!-- issue or N/A -->
+
+## How to test
+
+```bash
+# Commands the reviewer can run to reproduce / verify:
+docker run --rm -v "$PWD":/work -v "$HOME/.m2":/root/.m2 -w /work \
+  maven:3.9-eclipse-temurin-25 mvn -B test
+```
+
+<!-- Manual test steps (if any): load a save, join a server, trigger a
+death in the void, etc. State what you observed. -->
+
+<!-- Server console output if relevant (translatable components render
+in English there — that's normal). -->
+
+## Risk
+
+<!-- Which surface is touched? chat-only / item-loss / chunk-load / permissions.
+Is a rollback plan needed? Does it need a config.yml default? -->
+
+- [ ] chat message flow (immutable after send)
+- [ ] pt-BR singular-form rule (`5.966 blocos de Pedra`, not `5.966 Pedras`)
+- [ ] Bedrock equivalent (`comando:` typed fallback, `texto:` ASCII label)
+- [ ] stats path (`<world>/players/stats`, not `<world>/stats`)
+- [ ] reaction late-window (`reacao-validade-minutos`)
+- [ ] Bukkit main thread (no async chunk loads in event handlers)
+- [ ] new `comando:` added to `plugin.yml`
+- [ ] new permission declared in `plugin.yml`
+
+## Checklist
+
+- [ ] `mvn -B test` passes locally (JDK 25)
+- [ ] new behaviour has a test (`src/test/java/...`)
+- [ ] no hand edits to generated sources (none in this repo)
+- [ ] PR title is conventional-commit style
+- [ ] branch is up to date with `main`
+
+## AI review
+
+Label this PR **`AI-REVIEW`** to trigger `pragent`. Add **`AI-USAGE`** for a
+token/cost report on the review. The bot reads `.pr-review.json` from `main`
++ a static `architecture.md` from Nexus raw-hosted — so house rules (chat
+immutability, singular-form, Bedrock fallback, JDK 25) are baked in.