docs(tasks): add Gitea Axi tasks

docs/03 wrk/tasks/0011-gitea-axi-rust-migration.md

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+---
+aliases:
+  - "0011"
+  - Gitea Axi Rust Migration
+date-created: 2026-10-18 15:43
+date-modified: 2026-10-18 15:44
+status: open
+area: "[[monorepo]]"
+blocked-by:
+  - "[[0005-rust-cli-scaffolding]]"
+subtasks: []
+---
+
+# Gitea Axi Rust Migration
+
+Rewrite `gitea-axi` in Rust and migrate it into this monorepo.
+
+Preserve its Gitea workflow and command behavior.

docs/03 wrk/tasks/0012-gitea-axi-pr-merge-guardrail.md

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+---
+aliases:
+  - "0012"
+  - Gitea Axi PR Merge Guardrail
+date-created: 2026-10-18 15:43
+date-modified: 2026-10-18 15:43
+status: open
+area: "[[monorepo]]"
+blocked-by:
+  - "[[0011-gitea-axi-rust-migration]]"
+subtasks: []
+---
+
+# Gitea Axi PR Merge Guardrail
+
+Guard `gitea-axi pr merge` against an unpushed local rewrite.
+
+Compare the checked-out matching branch with the remote pull-request head.
+Require explicit confirmation when local commits are absent from that head.