added codex structure

.codex/prompts/bugfix.md

@@ -0,0 +1,37 @@
+# Bugfix prompt
+
+```text
+You are working in this repository as Codex.
+
+Mandatory instructions:
+- Read AGENTS.md and all relevant files under .codex/ before making changes.
+- Start from develop.
+- Create a dedicated fix branch.
+- Reproduce the bug with a failing test before implementing the fix, when practical.
+- Implement the minimal fix.
+- Run the configured Docker-based test command from .codex/project.md.
+- Update documentation and ADRs if required.
+- Commit using Conventional Commits.
+
+Bug description:
+<DESCRIBE THE BUG HERE>
+
+Expected behavior:
+<DESCRIBE EXPECTED BEHAVIOR HERE>
+
+Observed behavior:
+<DESCRIBE OBSERVED BEHAVIOR HERE>
+
+Acceptance criteria:
+<LIST ACCEPTANCE CRITERIA HERE>
+
+Final response must include:
+- branch name;
+- commit hash;
+- root cause;
+- summary of changes;
+- tests executed and result;
+- documentation/ADR updates;
+- residual risks;
+- rollback notes.
+```