docs: release 0.11.0 ISO builder handoff for the FreeBSD build host

Concise, release-specific handoff for codex/osa: repo state at unified 0.11.0
(commits + tags), the release-channel build command, the release-gate clean-tree
requirement (iso/colibri/clawdie-ai/zot), and the two caveats for this build —
colibri ships as raw FreeBSD binaries (poudriere/Phase 4 deferred until
mother-build) and CI is dormant (validate via local gates, not forge checks).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/RELEASE-0.11.0-HANDOFF.md

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+# Release 0.11.0 — ISO Builder Handoff
+
+**Date:** 21.jun.2026
+**For:** the FreeBSD build host (codex / osa). `build.sh` runs on FreeBSD, and the
+ISO needs FreeBSD `colibri` binaries — a Linux host cannot cross-build them, so
+this build happens on FreeBSD.
+
+## Source state (unified version 0.11.0)
+
+| Repo        | main      | tag     | notes                                       |
+| ----------- | --------- | ------- | ------------------------------------------- |
+| clawdie-iso | `7f55770` | v0.11.0 | `ISO_VERSION=0.11.0`                        |
+| colibri     | `b626082` | v0.11.0 | MIT; 230 tests green; fmt + clippy clean    |
+| clawdie-ai  | `393b0c7` | —       | clean on forge main                         |
+| zot         | `1a24a20` | —       | agent (front door); pinned by `ZOT_VERSION` |
+
+Locally-runnable gates pass on colibri + clawdie-iso (fmt, `CARGO_CRATES` and
+agent-jail drift checks, markdown). CI Actions are **dormant** (no runner) — gates
+are validated by hand, not by the forge.
+
+## Build
+
+On the FreeBSD build host, with a **clean** checkout of every repo the release
+gate asserts (clawdie-iso, colibri, clawdie-ai, and zot when
+`COLIBRI_STAGE_AGENT=YES`):
+
+```sh
+# pull latest main on each repo first; `git status` must be clean on all of them
+cd <clawdie-iso>
+BUILD_CHANNEL=release ./build.sh    # ISO_VERSION=0.11.0 from build.cfg
+```
+
+`check_release_gate()` aborts the release build if any of those trees is dirty.
+
+## Caveats for this build
+
+- **colibri ships as raw FreeBSD binaries** (the build host's `cargo build
+--release`). The poudriere path (`pkg install colibri` from `pkg.clawdie.si`,
+  Phase 4) stays **deferred** until the `mother-build` host exists — unchanged
+  from prior builds.
+- **No CI runner** — do not wait on forge checks; they sit `pending`. Validate
+  with the local gates above.