Add local environment lifecycle (#4297)

## Thinking Path

> - Paperclip orchestrates AI agents for zero-human companies.
> - Every heartbeat run needs a concrete place where the agent's adapter
process executes.
> - Today that execution location is implicitly the local machine, which
makes it hard to track, audit, and manage as a first-class runtime
concern.
> - The first step is to represent the current local execution path
explicitly without changing how users experience agent runs.
> - This pull request adds core Environment and Environment Lease
records, then routes existing local heartbeat execution through a
default `Local` environment.
> - The benefit is that local runs remain behavior-preserving while the
system now has durable environment identity, lease lifecycle tracking,
and activity records for execution placement.

## What Changed

- Added `environments` and `environment_leases` database tables, schema
exports, and migration `0065_environments.sql`.
- Added shared environment constants, TypeScript types, and validators
for environment drivers, statuses, lease policies, lease statuses, and
cleanup states.
- Added `environmentService` for listing, reading, creating, updating,
and ensuring company-scoped environments.
- Added environment lease lifecycle operations for acquire, metadata
update, single-lease release, and run-wide release.
- Updated heartbeat execution to lazily ensure a company-scoped default
`Local` environment before adapter execution.
- Updated heartbeat execution to acquire an ephemeral local environment
lease, write `paperclipEnvironment` into the run context snapshot, and
release active leases during run finalization.
- Added activity log events for environment lease acquisition and
release.
- Added tests for environment service behavior and the local heartbeat
environment lifecycle.
- Added a CI-follow-up heartbeat guard so deferred issue comment wakes
are promoted before automatic missing-comment retries, with focused
batching test coverage.

## Verification

Local verification run for this branch:

- `pnpm -r typecheck`
- `pnpm build`
- `pnpm exec vitest run server/src/__tests__/environment-service.test.ts
server/src/__tests__/heartbeat-local-environment.test.ts --pool=forks`

Additional reviewer/CI verification:

- Confirm `pnpm-lock.yaml` is not modified.
- Confirm `pnpm test:run` passes in CI.
- Confirm `PAPERCLIP_E2E_SKIP_LLM=true pnpm run test:e2e` passes in CI.
- Confirm a local heartbeat run creates one active `Local` environment
when needed, records one lease for the run, releases the lease when the
run finishes, and includes `paperclipEnvironment` in the run context
snapshot.

Screenshots: not applicable; this PR has no UI changes.

## Risks

- Migration risk: introduces two new tables and a new migration journal
entry. Review should verify company scoping, indexes, foreign keys, and
enum defaults are correct.
- Lifecycle risk: heartbeat finalization now releases environment leases
in addition to existing runtime cleanup. A finalization bug could leave
stale active leases or mark a failed run's lease incorrectly.
- Behavior-preservation risk: local adapter execution should remain
unchanged apart from environment bookkeeping. Review should pay
attention to the heartbeat path around context snapshot updates and
final cleanup ordering.
- Activity volume risk: each heartbeat run now logs lease acquisition
and release events, increasing activity log volume by two records per
run.

## Model Used

OpenAI GPT-5.4 via Codex CLI. Capabilities used: repository inspection,
TypeScript implementation review, local test/build execution, and
PR-description drafting.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [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 (N/A: no UI changes)
- [x] I have updated relevant documentation to reflect my changes (N/A:
no user-facing docs or commands changed)
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

packages/db/src/migrations/0065_environments.sql

@@ -0,0 +1,50 @@
+CREATE TABLE "environments" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"company_id" uuid NOT NULL,
+	"name" text NOT NULL,
+	"description" text,
+	"driver" text DEFAULT 'local' NOT NULL,
+	"status" text DEFAULT 'active' NOT NULL,
+	"config" jsonb DEFAULT '{}'::jsonb NOT NULL,
+	"metadata" jsonb,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "environment_leases" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"company_id" uuid NOT NULL,
+	"environment_id" uuid NOT NULL,
+	"execution_workspace_id" uuid,
+	"issue_id" uuid,
+	"heartbeat_run_id" uuid,
+	"status" text DEFAULT 'active' NOT NULL,
+	"lease_policy" text DEFAULT 'ephemeral' NOT NULL,
+	"provider" text,
+	"provider_lease_id" text,
+	"acquired_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"last_used_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"expires_at" timestamp with time zone,
+	"released_at" timestamp with time zone,
+	"failure_reason" text,
+	"cleanup_status" text,
+	"metadata" jsonb,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "environments" ADD CONSTRAINT "environments_company_id_companies_id_fk" FOREIGN KEY ("company_id") REFERENCES "public"."companies"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "environment_leases" ADD CONSTRAINT "environment_leases_company_id_companies_id_fk" FOREIGN KEY ("company_id") REFERENCES "public"."companies"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "environment_leases" ADD CONSTRAINT "environment_leases_environment_id_environments_id_fk" FOREIGN KEY ("environment_id") REFERENCES "public"."environments"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "environment_leases" ADD CONSTRAINT "environment_leases_execution_workspace_id_execution_workspaces_id_fk" FOREIGN KEY ("execution_workspace_id") REFERENCES "public"."execution_workspaces"("id") ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "environment_leases" ADD CONSTRAINT "environment_leases_issue_id_issues_id_fk" FOREIGN KEY ("issue_id") REFERENCES "public"."issues"("id") ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "environment_leases" ADD CONSTRAINT "environment_leases_heartbeat_run_id_heartbeat_runs_id_fk" FOREIGN KEY ("heartbeat_run_id") REFERENCES "public"."heartbeat_runs"("id") ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+CREATE INDEX "environments_company_status_idx" ON "environments" USING btree ("company_id","status");--> statement-breakpoint
+CREATE UNIQUE INDEX "environments_company_driver_idx" ON "environments" USING btree ("company_id","driver");--> statement-breakpoint
+CREATE INDEX "environments_company_name_idx" ON "environments" USING btree ("company_id","name");--> statement-breakpoint
+CREATE INDEX "environment_leases_company_environment_status_idx" ON "environment_leases" USING btree ("company_id","environment_id","status");--> statement-breakpoint
+CREATE INDEX "environment_leases_company_execution_workspace_idx" ON "environment_leases" USING btree ("company_id","execution_workspace_id");--> statement-breakpoint
+CREATE INDEX "environment_leases_company_issue_idx" ON "environment_leases" USING btree ("company_id","issue_id");--> statement-breakpoint
+CREATE INDEX "environment_leases_heartbeat_run_idx" ON "environment_leases" USING btree ("heartbeat_run_id");--> statement-breakpoint
+CREATE INDEX "environment_leases_company_last_used_idx" ON "environment_leases" USING btree ("company_id","last_used_at");--> statement-breakpoint
+CREATE INDEX "environment_leases_provider_lease_idx" ON "environment_leases" USING btree ("provider_lease_id");

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

@@ -456,6 +456,13 @@
       "when": 1776780002000,
       "tag": "0064_issue_thread_interaction_idempotency",
       "breakpoints": true
+    },
+    {
+      "idx": 65,
+      "version": "7",
+      "when": 1776903900000,
+      "tag": "0065_environments",
+      "breakpoints": true
     }
   ]
 }