fix(exec): use --output-format json to get structured output from claude

--json-schema combined with --output-format text produces empty stdout.
The structured result is in the "structured_output" field of the json
envelope. Updated executor to unwrap the envelope.

Also removes --bare flag which disables OAuth keychain reads, causing
silent auth failure when ANTHROPIC_API_KEY is not set.

Adds goreman Procfile + stdio bridge (cmd/bridge) for Claude Code MCP
integration. Task start/stop replaced with goreman + port-kill.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Taskfile.yml

@@ -66,6 +66,11 @@ tasks:
     cmds:
       - go build -o bin/supervisor ./cmd/supervisor
 
+  bridge:build:
+    desc: Build stdio↔HTTP bridge for Claude Code MCP integration
+    cmds:
+      - go build -o bin/supervisor-bridge ./cmd/bridge
+
   supervisor:test:smoke:
     desc: Smoke test supervisor via MCP (requires supervisor:dev running)
     cmds:
@@ -75,22 +80,15 @@ tasks:
           -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}' | jq .
 
   start:
-    desc: Start the full hyperguild (ingestion + supervisor) in a tmux session
+    desc: Start ingestion + supervisor (requires goreman — go install github.com/mattn/goreman@latest)
     cmds:
-      - |
-        tmux new-session -d -s hyperguild -x 220 -y 50 2>/dev/null || true
-        tmux rename-window -t hyperguild:0 'ingestion'
-        tmux send-keys -t hyperguild:ingestion "cd {{.ROOT_DIR}} && INGEST_BRAIN_DIR={{.ROOT_DIR}}/brain INGEST_PORT=3300 go run ./ingestion/cmd/server/" Enter
-        tmux new-window -t hyperguild -n 'supervisor'
-        tmux send-keys -t hyperguild:supervisor "cd {{.ROOT_DIR}} && SUPERVISOR_CONFIG_DIR={{.ROOT_DIR}}/config/supervisor SUPERVISOR_MODELS_FILE={{.ROOT_DIR}}/config/models.yaml SUPERVISOR_SESSIONS_DIR={{.ROOT_DIR}}/brain/sessions INGEST_BASE_URL=http://localhost:3300 go run ./cmd/supervisor/" Enter
-        tmux new-window -t hyperguild -n 'shell'
-        tmux select-window -t hyperguild:shell
-        tmux attach -t hyperguild
+      - goreman start
 
   stop:
-    desc: Stop the hyperguild tmux session
+    desc: Stop all hyperguild processes (Ctrl-C in the goreman terminal, or kill by port)
     cmds:
-      - tmux kill-session -t hyperguild 2>/dev/null || true
+      - lsof -ti:3300 | xargs kill -9 2>/dev/null || true
+      - lsof -ti:3200 | xargs kill -9 2>/dev/null || true
       - echo "hyperguild stopped"
 
   ingestion:build: