docs: DooPlex is the canonical CC environment; mark iso scripts executable

CONTEXT.md

@@ -3,6 +3,19 @@
 > Created with the REUSE.md rollout (2026-07-03). Authoritative history: `hub/CHANGELOG.md` (hub),
 > `website/CHANGELOG.md`, `scripts/CHANGELOG.md`; end-of-task detail in `REPORT.md`.
 
+- **2026-07-19 — CC WORKFLOW MIGRATED TO DOOPLEX.** Claude Code now runs natively on DooPlex
+  (192.168.0.180, Debian 13, `kisfenyo`) in a tmux session, working directly in
+  `/mnt/5_hdd/felhom.eu/git/<repo>`. **DooPlex is now the canonical CC environment; the Windows
+  workstation trees are stale** as of felhom.eu `ee48a48288`, felhom-agent `d81fddc7b1`,
+  felhom-controller `ac7323dc9a`, app-catalog-felhom.eu `a14c97db65` (unchanged — it had no
+  environment-specific content). Builds are local commands; felhom-pve is one `ssh` hop; `kubectl`
+  is local. **`claude-in-chrome` is NOT available here** — endpoint-level validation is the
+  standard method. New **clean-tree gate** before any build (`git status --porcelain` empty AND
+  `HEAD` == `origin/main`), because the CC working tree is now the tree `build.sh` builds from.
+  Windows knowledge is preserved in per-file "Legacy: Windows workstation" sections and the
+  versioned workspace file `documentation/runbooks/workspace-CLAUDE.md` (live copy:
+  `/mnt/5_hdd/felhom.eu/git/CLAUDE.md`).
+
 - **2026-07-17 — CUSTOMER SELF-BIND shipped (hub v0.66.0 + ISO scripts v1.20.0, R-27 slice 1).** A
   customer binds their OWN freshly-installed appliance without the operator. Operator clicks **"Send
   self-bind link"** on the customer Setup tab → hub mints a **7-day tokenized capability link** →