v0.22.0:0 - configurable vllm port; gitea-release tooling; coexistence roadmap

- Configure Sparks gains a vLLM port field (blank => 8888, our launch-cluster.sh
  default); VLLM_PORT plumbed configureSparks -> sparkConfig.yaml -> main.ts env
  -> config.py. So an adopter whose vLLM listens elsewhere (e.g. 8000) can fix
  the "vLLM unreachable" health check without rebuilding the package.
- Harden numeric env parsing (config._env_int): a blank or malformed port now
  falls back to its default instead of crashing daemon startup (closes a P3
  tech-debt item; the Configure panel passes unset optional fields as "").
- Add scripts/gitea-release.sh + `make release` to publish the built s9pk to
  Gitea Releases, so the OpenClaw adopter pulls updates with a read-only token
  instead of being hand-sent the package.
- Capture the OpenClaw/Johnny-5 coexistence epic and the "control plane, not a
  job runner" stance in ROADMAP.md and Current state.

package/startos/main.ts

@@ -13,6 +13,7 @@ export const main = sdk.setupMain(async ({ effects }) => {
     spark1_user: '',
     spark2_host: '',
     spark2_user: '',
+    vllm_port: '',
     parakeet_host: '',
     parakeet_user: '',
     parakeet_container: '',
@@ -50,6 +51,7 @@ export const main = sdk.setupMain(async ({ effects }) => {
         SPARK1_USER: cfg.spark1_user,
         SPARK2_HOST: cfg.spark2_host,
         SPARK2_USER: cfg.spark2_user,
+        VLLM_PORT: cfg.vllm_port,
         PARAKEET_HOST: cfg.parakeet_host,
         PARAKEET_USER: cfg.parakeet_user,
         PARAKEET_CONTAINER: cfg.parakeet_container,