Status LEDs, image model selection, backup restore, provider test, monthly versions

- Sidebar: three status LEDs (server, models, MCP) with an overview popover (/api/status)
- Images: preview stage, purpose-based model choice and reference images
  (Nano Banana Pro edit refines the chosen preview)
- Settings: restore a stored or uploaded backup (staged, applied on restart)
- Provider form: test connection; saving or reloading re-checks the status at once
- opencode Zen/Go: send x-opencode-session with a stable id per conversation
- Releases are named vYYYYMM-NNNNN; scripts/release.sh numbers, tags, builds and publishes
- Fix: backups made in the same second no longer overwrite each other

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/src/cli_api.rs

@@ -47,7 +47,7 @@ pub async fn config(Extension(user): Extension<User>, State(app): State<AppState
     let memory: String = app.store.user_setting(&user.id, "memory")?;
     let default_model = if cfg.server.default_model.is_empty() { app.registry().first_model() } else { Some(cfg.server.default_model.clone()) };
     Ok(Json(json!({
-        "version": env!("CARGO_PKG_VERSION"),
+        "version": codecraft_core::version::VERSION,
         "user": user,
         "models": app.registry().models_json(),
         "default_model": default_model,
@@ -115,8 +115,8 @@ pub async fn llm_stream(Extension(user): Extension<User>, State(app): State<AppS
     let provider_name = b.model.split_once('/').map(|(p, _)| p.to_string()).unwrap_or_default();
     crate::budget::check(&app, &provider_name, Some(&user.id)).map_err(|e| ApiError(StatusCode::PAYMENT_REQUIRED, format!("{e:#}")))?;
     let max_tokens = b.max_tokens.or(model.max_output).unwrap_or(16_000);
-    let req = ChatRequest { model: model.clone(), system: b.system, messages: b.messages, tools: b.tools, max_tokens, reasoning: b.reasoning };
     let session = format!("cli:{}", b.session.unwrap_or_else(|| "default".into()));
+    let req = ChatRequest { model: model.clone(), system: b.system, messages: b.messages, tools: b.tools, max_tokens, reasoning: b.reasoning, session_id: Some(session.clone()) };
     let agent = format!("cli:{}", b.agent.unwrap_or_else(|| "build".into()));
     let spec = b.model.clone();
     let (out_tx, out_rx) = tokio::sync::mpsc::channel::<Result<SseEvent, Infallible>>(256);