feat(scripts): add oc CLI target to launch.sh

Claude Code against an Ollama-backed model via the headroom hub. Model
defaults to glm-5.3:cloud, overridable with OC_MODEL. Unproven here, so
route it at tasks whose failure is cheap to detect.

.agents/scripts/launch.sh

@@ -6,13 +6,13 @@
 #   .agents/scripts/launch.sh 07 primitives --cli mm --fg
 #
 # Routing comes from plans/astro-refactor/MODEL-ROUTING.md. Override with --cli.
-# All three CLIs are launched with their permission prompts disabled: these run
+# All four CLIs are launched with their permission prompts disabled: these run
 # unattended inside a worktree, and a blocked edit or bash call just hangs.
 set -euo pipefail
 
 cd "$(git rev-parse --show-toplevel)"
 
-number=${1:?usage: launch.sh <task-number> <slug> [--base ref] [--cli codex|agy|mm] [--fg]}
+number=${1:?usage: launch.sh <task-number> <slug> [--base ref] [--cli codex|agy|mm|oc] [--fg]}
 slug=${2:?slug, e.g. scaffold}
 shift 2
 
@@ -118,6 +118,12 @@ run() {
       ( cd "$dir" && mm --dangerously-skip-permissions \
           --model opus -p "$prompt" )
       ;;
+    oc)
+      # Claude Code against a local-Ollama-backed model, through the headroom
+      # hub. Unproven on this repo — give it the task whose failure is cheapest.
+      ( cd "$dir" && OLLAMA_CLAUDE_MODEL="${OC_MODEL:-glm-5.3:cloud}" \
+          ollama-claude --dangerously-skip-permissions -p "$prompt" )
+      ;;
     *) echo "unknown cli: $cli" >&2; exit 2 ;;
   esac
 }