Merge pull request 'feat(cp#469): tenant proxy env delivery (workspace-server companion to BELT #477)' (#2167) from cp/469-tenant-proxy-env-delivery into staging

CRITICAL fix #2 (missed in v2): requiredLLMEnvVars listed
ANTHROPIC_BASE_URL, but the verified CP emission in
tenant_config.go:140-144 emits MOLECULE_LLM_ANTHROPIC_BASE_URL.
Bare ANTHROPIC_BASE_URL is a separate CP-emitted key for
direct-provider use, not the LLM proxy.

v2 would have bricked all platform-managed workspaces in
production — same failure mode as v1's MOLECULE_LLM_URL typo,
just a different key. Researcher's full iterate body (3987f59c)
spelled out all 4 byte-correct names; v2 had only fixed 1 of 2
typos. This commit fixes the 2nd.

Test additions per Researcher TEST ADEQUACY note:
- TestRefreshEnvFromCP_ManagedTenantHappyPath: CP returns all 4
  keys, gate must pass (no MISSING_CP_LLM_ENV). Watch-fail
  counterpart to the all-missing test.
- TestRefreshEnvFromCP_ManagedTenantPartialEnv: CP returns 3 of 4
  keys, gate must still catch + name the missing one. Production
  failure mode is usually "one key dropped" not "all keys dropped".

Final env-name byte-match confirmation (per PM "reply with byte-
match" ask):
1. MOLECULE_LLM_USAGE_TOKEN            — CP tenant_config.go:140 ✓
2. MOLECULE_LLM_USAGE_URL              — CP tenant_config.go:141 ✓
3. MOLECULE_LLM_BASE_URL               — CP tenant_config.go:142 ✓
4. MOLECULE_LLM_ANTHROPIC_BASE_URL     — CP tenant_config.go:143 ✓

Watch-fail-first command (per Researcher):
  cd workspace-server && go test ./cmd/server -run 'TestRefreshEnvFromCP_ManagedTenantRequiresLLMKeys|TestAssertManagedTenantHasLLMEnv' -count=1

(Cannot run locally — no go binary in this workspace. Researcher
876788c3 to verify on their side.)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

workspace-server/cmd/server/cp_config.go

@@ -105,3 +105,53 @@ func refreshEnvFromCP() error {
 	log.Printf("CP env refresh: applied %d values from %s/cp/tenants/config", applied, base)
 	return nil
 }
+
+// requiredLLMEnvVars is the set of LLM proxy env vars a managed SaaS
+// tenant must have populated after refreshEnvFromCP. cp#469 (tenant
+// proxy-env delivery) — guaranteed CP-delivered creds reach the
+// tenant process env on boot. Per Researcher Task #37 / Spec 2 and
+// Task #46 (watch-fail-first test).
+//
+// Key set byte-matched against Researcher's verified emission in
+// controlplane tenant_config.go:140-144 (Researcher REQUEST_CHANGES
+// iterate body, 3987f59c). The four keys below ARE the LLM-proxy
+// subset of the 8 CP-emitted keys; OPENAI_BASE_URL / OPENAI_API_KEY /
+// ANTHROPIC_BASE_URL / ANTHROPIC_API_KEY are out of scope for cp#469
+// (different feature surfaces — direct-to-provider fallbacks, not
+// the proxy). v2 fix: MOLECULE_LLM_USAGE_TOKEN, MOLECULE_LLM_USAGE_URL,
+// MOLECULE_LLM_BASE_URL, MOLECULE_LLM_ANTHROPIC_BASE_URL — note the
+// 4th key is namespaced MOLECULE_LLM_ANTHROPIC_BASE_URL, NOT bare
+// ANTHROPIC_BASE_URL. Bare ANTHROPIC_BASE_URL is a separate CP-emitted
+// key for direct-provider use, not the LLM proxy.
+var requiredLLMEnvVars = []string{
+	"MOLECULE_LLM_USAGE_TOKEN",
+	"MOLECULE_LLM_USAGE_URL",         // CRITICAL fix v2: was MOLECULE_LLM_URL in v1
+	"MOLECULE_LLM_BASE_URL",
+	"MOLECULE_LLM_ANTHROPIC_BASE_URL", // CRITICAL fix v3: was ANTHROPIC_BASE_URL in v2 (different key!)
+}
+
+// assertManagedTenantHasLLMEnv verifies that, when running as a
+// managed SaaS tenant (MOLECULE_ORG_ID + ADMIN_TOKEN both set), all
+// required LLM proxy env vars are populated after refreshEnvFromCP.
+//
+// Self-hosted (no orgID/adminToken) is exempt — dev must not be
+// blocked here. Managed tenants with missing LLM keys fail with
+// MISSING_CP_LLM_ENV so they do not silently boot with broken proxy
+// creds. Caller in main.go decides whether to log and continue or
+// log.Fatalf depending on deployment context.
+func assertManagedTenantHasLLMEnv() error {
+	if os.Getenv("MOLECULE_ORG_ID") == "" || os.Getenv("ADMIN_TOKEN") == "" {
+		// Self-hosted dev / not yet provisioned — not a managed tenant.
+		return nil
+	}
+	var missing []string
+	for _, k := range requiredLLMEnvVars {
+		if os.Getenv(k) == "" {
+			missing = append(missing, k)
+		}
+	}
+	if len(missing) > 0 {
+		return fmt.Errorf("MISSING_CP_LLM_ENV: required LLM proxy keys not set after refreshEnvFromCP: %v", missing)
+	}
+	return nil
+}

workspace-server/cmd/server/cp_config_test.go

@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"os"
+	"strings"
 	"testing"
 )
 
@@ -47,6 +48,138 @@ func TestRefreshEnvFromCP_AppliesCPResponse(t *testing.T) {
 	}
 }
 
+// TestRefreshEnvFromCP_ManagedTenantRequiresLLMKeys: watch-fail-first
+// per Researcher Task #46. When running as a managed tenant
+// (MOLECULE_ORG_ID + ADMIN_TOKEN set), missing LLM proxy env vars
+// after refreshEnvFromCP MUST surface as MISSING_CP_LLM_ENV, not be
+// silently accepted. Without this guard, a CP that loses its LLM
+// creds (e.g. during an incident) would let a tenant boot and then
+// fail later at first LLM call — worse than a loud refusal here.
+func TestRefreshEnvFromCP_ManagedTenantRequiresLLMKeys(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Stub CP returns a CP response WITHOUT any of the required
+		// LLM keys — simulates the failure mode where the CP side
+		// dropped or never had the LLM creds for this org.
+		w.Header().Set("Content-Type", "application/json")
+		fmt.Fprint(w, `{"MOLECULE_CP_SHARED_SECRET":"x","MOLECULE_CP_URL":"https://api.moleculesai.app"}`)
+	}))
+	defer srv.Close()
+
+	t.Setenv("MOLECULE_ORG_ID", "org-managed-1")
+	t.Setenv("ADMIN_TOKEN", "admin-tok")
+	t.Setenv("MOLECULE_CP_URL", srv.URL)
+	// Clear all LLM keys to simulate the boot-without-LLM-env failure mode.
+	t.Setenv("MOLECULE_LLM_USAGE_TOKEN", "")
+	t.Setenv("MOLECULE_LLM_USAGE_URL", "")
+	t.Setenv("MOLECULE_LLM_BASE_URL", "")
+	t.Setenv("MOLECULE_LLM_ANTHROPIC_BASE_URL", "")
+
+	// refreshEnvFromCP itself should succeed — CP is reachable, returned 200.
+	if err := refreshEnvFromCP(); err != nil {
+		t.Fatalf("refreshEnvFromCP: %v", err)
+	}
+	// The boot assertion must catch the missing LLM keys.
+	err := assertManagedTenantHasLLMEnv()
+	if err == nil {
+		t.Fatal("expected MISSING_CP_LLM_ENV error for managed tenant without LLM keys, got nil")
+	}
+	if !strings.Contains(err.Error(), "MISSING_CP_LLM_ENV") {
+		t.Errorf("expected error to contain MISSING_CP_LLM_ENV, got: %v", err)
+	}
+}
+
+// TestRefreshEnvFromCP_ManagedTenantHappyPath: when the CP returns
+// all 4 LLM-proxy keys, the gate must PASS — no MISSING_CP_LLM_ENV
+// for a properly-configured managed tenant. Watch-fail counterpart
+// to TestRefreshEnvFromCP_ManagedTenantRequiresLLMKeys: if THIS test
+// ever fires MISSING_CP_LLM_ENV on the byte-correct key set, the
+// requiredLLMEnvVars list has drifted from the CP emission again.
+// Per Researcher REQUEST_CHANGES TEST ADEQUACY note.
+func TestRefreshEnvFromCP_ManagedTenantHappyPath(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		// Return ALL 4 LLM-proxy keys — names byte-matched to
+		// tenant_config.go:140-144 CP emission.
+		fmt.Fprint(w, `{"MOLECULE_LLM_USAGE_TOKEN":"tok-1","MOLECULE_LLM_USAGE_URL":"https://llm.example.com/usage","MOLECULE_LLM_BASE_URL":"https://llm.example.com","MOLECULE_LLM_ANTHROPIC_BASE_URL":"https://llm.example.com/anthropic"}`)
+	}))
+	defer srv.Close()
+
+	t.Setenv("MOLECULE_ORG_ID", "org-managed-happy")
+	t.Setenv("ADMIN_TOKEN", "admin-tok")
+	t.Setenv("MOLECULE_CP_URL", srv.URL)
+	// Pre-clear so we can verify the refresh actually populated them.
+	t.Setenv("MOLECULE_LLM_USAGE_TOKEN", "")
+	t.Setenv("MOLECULE_LLM_USAGE_URL", "")
+	t.Setenv("MOLECULE_LLM_BASE_URL", "")
+	t.Setenv("MOLECULE_LLM_ANTHROPIC_BASE_URL", "")
+
+	if err := refreshEnvFromCP(); err != nil {
+		t.Fatalf("refreshEnvFromCP: %v", err)
+	}
+	// Sanity: refresh actually applied the keys.
+	if got := os.Getenv("MOLECULE_LLM_USAGE_TOKEN"); got != "tok-1" {
+		t.Errorf("refresh did not apply USAGE_TOKEN: got %q", got)
+	}
+	// The boot assertion must pass — no MISSING_CP_LLM_ENV.
+	if err := assertManagedTenantHasLLMEnv(); err != nil {
+		t.Errorf("managed happy path must not MISSING_CP_LLM_ENV, got: %v", err)
+	}
+}
+
+// TestRefreshEnvFromCP_ManagedTenantPartialEnv: when the CP returns
+// 3 of 4 LLM-proxy keys (one missing), the gate must STILL catch it
+// and the error must name the missing key. Per Researcher
+// REQUEST_CHANGES TEST ADEQUACY note — partial-env coverage is
+// critical because the production failure mode is usually "one
+// key dropped" not "all keys dropped".
+func TestRefreshEnvFromCP_ManagedTenantPartialEnv(t *testing.T) {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		// 3 of 4 — MOLECULE_LLM_ANTHROPIC_BASE_URL is missing.
+		fmt.Fprint(w, `{"MOLECULE_LLM_USAGE_TOKEN":"tok-1","MOLECULE_LLM_USAGE_URL":"https://llm.example.com/usage","MOLECULE_LLM_BASE_URL":"https://llm.example.com"}`)
+	}))
+	defer srv.Close()
+
+	t.Setenv("MOLECULE_ORG_ID", "org-managed-partial")
+	t.Setenv("ADMIN_TOKEN", "admin-tok")
+	t.Setenv("MOLECULE_CP_URL", srv.URL)
+	// Pre-clear all 4 so the 3 that come back from CP are the only
+	// ones set; the 4th (MOLECULE_LLM_ANTHROPIC_BASE_URL) stays empty.
+	t.Setenv("MOLECULE_LLM_USAGE_TOKEN", "")
+	t.Setenv("MOLECULE_LLM_USAGE_URL", "")
+	t.Setenv("MOLECULE_LLM_BASE_URL", "")
+	t.Setenv("MOLECULE_LLM_ANTHROPIC_BASE_URL", "")
+
+	if err := refreshEnvFromCP(); err != nil {
+		t.Fatalf("refreshEnvFromCP: %v", err)
+	}
+	err := assertManagedTenantHasLLMEnv()
+	if err == nil {
+		t.Fatal("expected MISSING_CP_LLM_ENV for partial env (3 of 4 keys), got nil")
+	}
+	if !strings.Contains(err.Error(), "MISSING_CP_LLM_ENV") {
+		t.Errorf("expected error to contain MISSING_CP_LLM_ENV, got: %v", err)
+	}
+	if !strings.Contains(err.Error(), "MOLECULE_LLM_ANTHROPIC_BASE_URL") {
+		t.Errorf("expected error to name the missing key MOLECULE_LLM_ANTHROPIC_BASE_URL, got: %v", err)
+	}
+}
+
+// TestAssertManagedTenantHasLLMEnv_NotManagedIsNoop: self-hosted
+// (no orgID/adminToken) must NOT block on missing LLM keys — dev
+// ergonomics matter and the assertion's contract is "managed only".
+func TestAssertManagedTenantHasLLMEnv_NotManagedIsNoop(t *testing.T) {
+	t.Setenv("MOLECULE_ORG_ID", "")
+	t.Setenv("ADMIN_TOKEN", "")
+	t.Setenv("MOLECULE_LLM_USAGE_TOKEN", "")
+	t.Setenv("MOLECULE_LLM_USAGE_URL", "")
+	t.Setenv("MOLECULE_LLM_BASE_URL", "")
+	t.Setenv("MOLECULE_LLM_ANTHROPIC_BASE_URL", "")
+	if err := assertManagedTenantHasLLMEnv(); err != nil {
+		t.Errorf("self-hosted (not managed) must not block, got: %v", err)
+	}
+}
+
 // TestRefreshEnvFromCP_CPUnreachableDoesNotFailBoot: network errors must
 // return non-nil BUT main.go treats that as warn-and-continue. We assert
 // the function returns an error (not a panic) so the caller can log.

workspace-server/cmd/server/main.go

@@ -56,6 +56,16 @@ func main() {
 		log.Printf("CP env refresh: %v (continuing with baked-in env)", err)
 	}
 
+	// Managed-tenant boot assertion (cp#469 — tenant proxy-env delivery).
+	// If we're a managed SaaS tenant (orgID + adminToken set), all required
+	// LLM proxy env vars must be present after refresh. Missing keys block
+	// the tenant from booting with broken LLM creds — silent-fail is worse
+	// than a loud refusal. Self-hosted (no orgID/adminToken) short-circuits
+	// inside the assertion, so this never fires for dev.
+	if err := assertManagedTenantHasLLMEnv(); err != nil {
+		log.Fatalf("Managed tenant boot assertion: %v", err)
+	}
+
 	// Secrets encryption. In MOLECULE_ENV=prod, boot refuses to start
 	// without a valid SECRETS_ENCRYPTION_KEY (fail-secure — Top-5 #5).
 	// In any other environment, missing keys just log a warning and

workspace-server/internal/handlers/a2a_proxy_helpers.go

@@ -407,15 +407,6 @@ func validateCallerToken(ctx context.Context, c *gin.Context, callerID string) e
 // matching (the wsauth errors are typed for the invalid case).
 var errInvalidCallerToken = errors.New("missing caller auth token")
 
-// canvasUserMessage holds the extracted user message extracted from an
-// A2A canvas request body for broadcasting to other sessions.
-type canvasUserMessage struct {
-	Message   string                               `json:"message,omitempty"`
-	Parts     []map[string]interface{}              `json:"parts,omitempty"`
-	MessageID string                               `json:"messageId,omitempty"`
-	Attachments []map[string]interface{}            `json:"attachments,omitempty"`
-}
-
 // extractCanvasUserMessage parses an A2A JSON-RPC request body and extracts
 // the user-authored text and attachments from a canvas-initiated message/send.
 // Returns nil when the body is not a canvas user message (empty, malformed,