[codex] Add resource membership controls (#6677)

## Thinking Path

> - Paperclip orchestrates AI-agent companies through company-scoped
issues, projects, agents, and board-visible workflows.
> - The board sidebar and project list are the daily navigation surface
for that control plane.
> - Users need to keep all projects and agents accessible while hiding
resources they have intentionally left from their own sidebar.
> - That requires user-scoped resource membership state backed by
company-scoped API and database contracts.
> - The branch also needed to preserve HTTP worktree login sessions and
keep the project list easier to scan after membership grouping.
> - This pull request adds resource membership controls, sidebar leave
actions, grouped/sortable project listings, and focused tests.
> - The benefit is a cleaner personal workspace view without weakening
company-scoped access to the underlying project or agent detail pages.

## What Changed

- Added `project_memberships` and `agent_memberships` tables with
API/shared/server contracts for current-user join/leave state.
- Renumbered the membership migration to `0090_resource_memberships`
after rebasing onto current `master`, and made it idempotent for anyone
who had applied the old branch-local `0087` migration.
- Added project and agent sidebar leave actions, plus list filtering
that waits for membership state before hiding resources.
- Added grouped project listing, project sorting controls, and reserved
row subtitle height for cleaner scanning.
- Fixed HTTP auth cookie security handling so HTTP worktree sessions can
persist.
- Updated focused server and UI tests for the new membership, sidebar,
project list, and auth behavior.

## Verification

- `pnpm exec vitest run server/src/__tests__/better-auth.test.ts
server/src/__tests__/resource-memberships-routes.test.ts
ui/src/pages/Projects.test.tsx
ui/src/components/SidebarProjects.test.tsx
ui/src/components/SidebarAgents.test.tsx
ui/src/components/MembershipAction.test.tsx
ui/src/components/EntityRow.test.tsx`
- Confirmed the branch is rebased on current `origin/master`.
- Confirmed the PR diff does not include `pnpm-lock.yaml` or
`.github/workflows` changes.

## Risks

- Migration safety: low to medium. The migration now uses `IF NOT
EXISTS` / guarded constraints and is numbered after current master
migrations, but it should still get CI coverage against fresh databases.
- UI behavior: low. Left resources are hidden from sidebar only after
membership state loads; direct detail access remains available.
- Auth behavior: low. Cookie security is relaxed only for HTTP/private
local-style origins where secure cookies would prevent login
persistence.

> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.

## Model Used

- OpenAI GPT-5 Codex coding agent, tool-enabled shell/git workflow,
context window not exposed by runtime.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

Screenshot note: no browser screenshots were captured in this heartbeat;
the UI changes are covered by focused component tests above.

---------

Co-authored-by: Paperclip <noreply@paperclip.ing>

packages/db/src/migrations/0090_resource_memberships.sql

@@ -0,0 +1,55 @@
+CREATE TABLE IF NOT EXISTS "agent_memberships" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"company_id" uuid NOT NULL,
+	"agent_id" uuid NOT NULL,
+	"user_id" text NOT NULL,
+	"state" text DEFAULT 'joined' NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE IF NOT EXISTS "project_memberships" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"company_id" uuid NOT NULL,
+	"project_id" uuid NOT NULL,
+	"user_id" text NOT NULL,
+	"state" text DEFAULT 'joined' NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+DO $$ BEGIN
+	IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'agent_memberships_company_id_companies_id_fk') THEN
+		ALTER TABLE "agent_memberships" ADD CONSTRAINT "agent_memberships_company_id_companies_id_fk" FOREIGN KEY ("company_id") REFERENCES "public"."companies"("id") ON DELETE cascade ON UPDATE no action;
+	END IF;
+END $$;
+--> statement-breakpoint
+DO $$ BEGIN
+	IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'agent_memberships_agent_id_agents_id_fk') THEN
+		ALTER TABLE "agent_memberships" ADD CONSTRAINT "agent_memberships_agent_id_agents_id_fk" FOREIGN KEY ("agent_id") REFERENCES "public"."agents"("id") ON DELETE cascade ON UPDATE no action;
+	END IF;
+END $$;
+--> statement-breakpoint
+DO $$ BEGIN
+	IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'project_memberships_company_id_companies_id_fk') THEN
+		ALTER TABLE "project_memberships" ADD CONSTRAINT "project_memberships_company_id_companies_id_fk" FOREIGN KEY ("company_id") REFERENCES "public"."companies"("id") ON DELETE cascade ON UPDATE no action;
+	END IF;
+END $$;
+--> statement-breakpoint
+DO $$ BEGIN
+	IF NOT EXISTS (SELECT 1 FROM pg_constraint WHERE conname = 'project_memberships_project_id_projects_id_fk') THEN
+		ALTER TABLE "project_memberships" ADD CONSTRAINT "project_memberships_project_id_projects_id_fk" FOREIGN KEY ("project_id") REFERENCES "public"."projects"("id") ON DELETE cascade ON UPDATE no action;
+	END IF;
+END $$;
+--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "agent_memberships_company_user_idx" ON "agent_memberships" USING btree ("company_id","user_id");
+--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "agent_memberships_agent_idx" ON "agent_memberships" USING btree ("agent_id");
+--> statement-breakpoint
+CREATE UNIQUE INDEX IF NOT EXISTS "agent_memberships_company_user_agent_uq" ON "agent_memberships" USING btree ("company_id","user_id","agent_id");
+--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "project_memberships_company_user_idx" ON "project_memberships" USING btree ("company_id","user_id");
+--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "project_memberships_project_idx" ON "project_memberships" USING btree ("project_id");
+--> statement-breakpoint
+CREATE UNIQUE INDEX IF NOT EXISTS "project_memberships_company_user_project_uq" ON "project_memberships" USING btree ("company_id","user_id","project_id");

packages/db/src/migrations/meta/_journal.json

@@ -631,6 +631,13 @@
       "when": 1779129600000,
       "tag": "0089_cloud_upstreams",
       "breakpoints": true
+    },
+    {
+      "idx": 90,
+      "version": "7",
+      "when": 1779573019125,
+      "tag": "0090_resource_memberships",
+      "breakpoints": true
     }
   ]
 }

packages/db/src/schema/agent_memberships.ts

@@ -0,0 +1,25 @@
+import { pgTable, uuid, text, timestamp, uniqueIndex, index } from "drizzle-orm/pg-core";
+import { agents } from "./agents.js";
+import { companies } from "./companies.js";
+
+export const agentMemberships = pgTable(
+  "agent_memberships",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    companyId: uuid("company_id").notNull().references(() => companies.id, { onDelete: "cascade" }),
+    agentId: uuid("agent_id").notNull().references(() => agents.id, { onDelete: "cascade" }),
+    userId: text("user_id").notNull(),
+    state: text("state").notNull().default("joined"),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    companyUserIdx: index("agent_memberships_company_user_idx").on(table.companyId, table.userId),
+    agentIdx: index("agent_memberships_agent_idx").on(table.agentId),
+    companyUserAgentUq: uniqueIndex("agent_memberships_company_user_agent_uq").on(
+      table.companyId,
+      table.userId,
+      table.agentId,
+    ),
+  }),
+);

packages/db/src/schema/index.ts

@@ -6,6 +6,7 @@ export { cloudUpstreamConnections, cloudUpstreamRuns } from "./cloud_upstreams.j
 export { instanceUserRoles } from "./instance_user_roles.js";
 export { userSidebarPreferences } from "./user_sidebar_preferences.js";
 export { agents } from "./agents.js";
+export { agentMemberships } from "./agent_memberships.js";
 export { boardApiKeys } from "./board_api_keys.js";
 export { cliAuthChallenges } from "./cli_auth_challenges.js";
 export { companyMemberships } from "./company_memberships.js";
@@ -21,6 +22,7 @@ export { agentRuntimeState } from "./agent_runtime_state.js";
 export { agentTaskSessions } from "./agent_task_sessions.js";
 export { agentWakeupRequests } from "./agent_wakeup_requests.js";
 export { projects } from "./projects.js";
+export { projectMemberships } from "./project_memberships.js";
 export { projectWorkspaces } from "./project_workspaces.js";
 export { executionWorkspaces } from "./execution_workspaces.js";
 export { environments } from "./environments.js";

packages/db/src/schema/project_memberships.ts

@@ -0,0 +1,25 @@
+import { pgTable, uuid, text, timestamp, uniqueIndex, index } from "drizzle-orm/pg-core";
+import { companies } from "./companies.js";
+import { projects } from "./projects.js";
+
+export const projectMemberships = pgTable(
+  "project_memberships",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    companyId: uuid("company_id").notNull().references(() => companies.id, { onDelete: "cascade" }),
+    projectId: uuid("project_id").notNull().references(() => projects.id, { onDelete: "cascade" }),
+    userId: text("user_id").notNull(),
+    state: text("state").notNull().default("joined"),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    companyUserIdx: index("project_memberships_company_user_idx").on(table.companyId, table.userId),
+    projectIdx: index("project_memberships_project_idx").on(table.projectId),
+    companyUserProjectUq: uniqueIndex("project_memberships_company_user_project_uq").on(
+      table.companyId,
+      table.userId,
+      table.projectId,
+    ),
+  }),
+);