fix(onboarding): targets visibility + unified pipeline by default

The onboarding wizard created OnboardedTargets that were invisible in the
dashboard, and triggering a scan failed with "Repository <id> not found":
`/targets/{id}/scan` went through `run_scan`, which consulted the global
`unified_pipeline` flag and fell to the legacy repository pipeline (reads
`repositories`, not `onboarded_targets`).

Agent
- Add `ComplianceAgent::run_target_scan`, always dispatching to the unified
  `run_target` pipeline. The target-scan endpoint operates on
  `onboarded_targets` by construction, so it must not depend on the
  transition flag. `trigger_target_scan` now calls it.
- Default `UNIFIED_PIPELINE` to on (no legacy `repositories` data in prod);
  set `UNIFIED_PIPELINE=0` to opt back to the legacy pipeline.
- Scheduler now scans `onboarded_targets` (via `run_target_scan`) instead of
  the legacy `repositories` collection.

Dashboard
- New Targets page (`/targets`): lists onboarded targets with detected type,
  artifacts, findings count, applicable-scans matrix (on expand), plus Run
  scan and Delete. Sidebar "Repositories" nav becomes "Targets".
- Remove the "Add Repository" form from the Repositories page — onboarding
  is the single entry point (private-repo auth + issue tracker move into the
  onboarding flow, revisable on the target).
- Add `delete_target` server fn.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

compliance-agent/src/agent.rs

@@ -70,6 +70,26 @@ impl ComplianceAgent {
         }
     }
 
+    /// Run a scan for an onboarded target through the unified pipeline,
+    /// unconditionally.
+    ///
+    /// Unlike [`Self::run_scan`], this does *not* consult the
+    /// `unified_pipeline` transition flag: the caller (the `/targets/{id}/scan`
+    /// endpoint) operates on `onboarded_targets` by construction, so it must
+    /// always dispatch to `run_target` regardless of how the legacy paths
+    /// (scheduler, webhooks, `/repositories/{id}/scan`) are configured.
+    pub async fn run_target_scan(
+        &self,
+        tenant_id: &str,
+        target_id: &str,
+        trigger: compliance_core::models::ScanTrigger,
+    ) -> Result<(), crate::error::AgentError> {
+        let db = self.db_pool.for_tenant_id(tenant_id).await?;
+        let orchestrator =
+            PipelineOrchestrator::new(self.config.clone(), db, self.llm.clone(), self.http.clone());
+        orchestrator.run_target(target_id, trigger).await
+    }
+
     /// Run a PR review: scan the diff and post review comments.
     pub async fn run_pr_review(
         &self,

compliance-agent/src/api/handlers/onboarding.rs

@@ -375,8 +375,11 @@ pub async fn trigger_target_scan(
     let agent_clone = (*agent).clone();
     let tenant_id = tenant.0.tenant_id.clone();
     tokio::spawn(async move {
+        // Always the unified target pipeline — this endpoint is about an
+        // onboarded target by construction, independent of the global
+        // `unified_pipeline` transition flag used by the legacy paths.
         if let Err(e) = agent_clone
-            .run_scan(
+            .run_target_scan(
                 &tenant_id,
                 &id,
                 compliance_core::models::ScanTrigger::Manual,

compliance-agent/src/config.rs

@@ -47,9 +47,12 @@ pub fn load_config() -> Result<AgentConfig, AgentError> {
             .unwrap_or_else(|| "/tmp/compliance-scanner/repos".to_string()),
         artifact_store_base_path: env_var_opt("ARTIFACT_STORE_BASE_PATH")
             .unwrap_or_else(|| "/data/compliance-scanner/artifacts".to_string()),
+        // Defaults ON: the unified onboarded-target pipeline is now the primary
+        // path (no legacy `repositories` data in production). Set
+        // `UNIFIED_PIPELINE=0` to fall back to the legacy repository pipeline.
         unified_pipeline: env_var_opt("UNIFIED_PIPELINE")
             .map(|v| v == "1" || v.eq_ignore_ascii_case("true"))
-            .unwrap_or(false),
+            .unwrap_or(true),
         ssh_key_path: env_var_opt("SSH_KEY_PATH")
             .unwrap_or_else(|| "/data/compliance-scanner/ssh/id_ed25519".to_string()),
         keycloak_url: env_var_opt("KEYCLOAK_URL"),

compliance-agent/src/scheduler.rs

@@ -288,25 +288,25 @@ async fn scan_all_repos(agent: &ComplianceAgent, tenant_id: &str) {
         None => return,
     };
 
-    let cursor = match db.repositories().find(doc! {}).await {
+    let cursor = match db.onboarded_targets().find(doc! {}).await {
         Ok(c) => c,
         Err(e) => {
-            tracing::error!("Failed to list repos for tenant '{tenant_id}': {e}");
+            tracing::error!("Failed to list targets for tenant '{tenant_id}': {e}");
             return;
         }
     };
 
-    let repos: Vec<_> = cursor.filter_map(|r| async { r.ok() }).collect().await;
+    let targets: Vec<_> = cursor.filter_map(|r| async { r.ok() }).collect().await;
 
-    for repo in repos {
-        let repo_id = repo.id.map(|id| id.to_hex()).unwrap_or_default();
+    for target in targets {
+        let target_id = target.id.map(|id| id.to_hex()).unwrap_or_default();
         if let Err(e) = agent
-            .run_scan(tenant_id, &repo_id, ScanTrigger::Scheduled)
+            .run_target_scan(tenant_id, &target_id, ScanTrigger::Scheduled)
             .await
         {
             tracing::error!(
                 "Scheduled scan failed for {} (tenant '{tenant_id}'): {e}",
-                repo.name
+                target.name
             );
         }
     }