docs(agents): add commit hygiene section mirroring serverAppConfigs

Imports the Git Workflow / Testing law from dank/serverAppConfigs: pull+clean tree, atomic early commits, bats+secret gate as commit precondition, push on green, imperative messages with Refs #N.

AGENTS.md

@@ -36,6 +36,26 @@ with YAML frontmatter, spec at `omp-docs/references/okf-spec.md`).
 - Trash convention: never `rm` anything user-authored — move it to `.AGENTTRASH/`
   (gitignored). Deletion is a pruning session with Frank present.
 
+### Commit hygiene (mirrors dank/serverAppConfigs)
+
+The law is imported from the serverAppConfigs repo — checkout on the dev box at
+`~/Projects/serverAppConfig`, see its `AGENTS.md` § *Git Workflow* and
+§ *Testing* ("All edits flow through git", "tests are mandatory before
+commit"). Applied here:
+
+- `git pull` before starting new work; start from a clean tree. The checkout
+  IS the deployment here — a dirty tracked file is a half-deployed config
+  serving the live agent.
+- Commit atomically and early: one commit = one complete functional unit,
+  never a pile of half-edited files; docs land in the same commit as the
+  change they document.
+- `bats tests/` green + the pre-commit secret gate = the commit precondition;
+  the full suite runs at pre-push.
+- Push to the local Gitea as soon as a unit is green — every other
+  workstation pulls from there. `git * --no-verify` is forbidden (the secret
+  gate is the point of the hook).
+- Messages: imperative mood, what + why, `Refs #N` when a Gitea issue exists.
+
 ## Secret gate (HARD rule)
 
 The pre-commit hook (`.githooks/pre-commit`, enabled via