feat: single-source cross-app wire contracts in @boocode/contracts (v2.7.13)

Move all hand-synced cross-app wire contracts into one built workspace
package, @boocode/contracts, consumed by server/web/coder/coder-web via
workspace:* + a per-subpath exports map. The ws-frames and provider-config
Zod schemas are schema-first (z.infer); MessageMetadata, ErrorReason,
AgentSessionConfig, the provider snapshot types, and WorktreeRiskReport are
each single-sourced. Deletes the byte-identical copies and their parity
tests, fixes a live AgentSessionConfig drift (coder dead copy removed,
unified to the web required/nullable shape), removes the dead pending_change
WS arms in the fallback SPA, and inverts the build order (contracts builds
first) across root build, Dockerfile, and the coder deploy docs. Reverses
the shared-package decision declined in v2.5.12.

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

apps/coder/src/services/__tests__/provider-types-parity.test.ts

@@ -1,64 +0,0 @@
-import { describe, it, expect } from 'vitest';
-import { readFileSync } from 'node:fs';
-import { resolve, dirname } from 'node:path';
-import { fileURLToPath } from 'node:url';
-
-/**
- * Parity guard between the two copies of the provider snapshot types:
- *   apps/coder/src/services/provider-types.ts  (backend source of truth)
- *   apps/web/src/api/types.ts                  (web wire copy)
- *
- * APPROACH: text-identity of each shared type block (mirrors the repo's existing
- * ws-frames.test.ts byte-parity convention). A compile-time bidirectional-
- * assignability check was attempted first (a web-side file importing coder's
- * import-free provider-types.ts), but apps/web/tsconfig.app.json is a composite
- * project and rejects out-of-include files with TS6307 — so cross-project type
- * import is structurally blocked. This runtime guard FAILS on any field
- * add/remove/rename/loosen in either copy, including the nested model/mode/
- * command types that ProviderSnapshotEntry references. Single-source-of-truth
- * (shared workspace package) is deferred as a Tier-2 follow-up.
- */
-const here = dirname(fileURLToPath(import.meta.url));
-const coderSrc = readFileSync(resolve(here, '../provider-types.ts'), 'utf8');
-const webSrc = readFileSync(resolve(here, '../../../../web/src/api/types.ts'), 'utf8');
-
-function extractBlock(src: string, name: string): string {
-  const iface = src.match(new RegExp(`export interface ${name} \\{[\\s\\S]*?\\n\\}`));
-  const alias = src.match(new RegExp(`export type ${name} =[^;]*;`));
-  const block = iface?.[0] ?? alias?.[0];
-  if (!block) throw new Error(`type block '${name}' not found`);
-  // Normalize to type structure: drop blank + comment lines (//, /* */, *),
-  // trim each line. Field add/remove/rename/loosen still changes a field line.
-  return block
-    .split('\n')
-    .map((l) => l.trim())
-    .filter(
-      (l) =>
-        l.length > 0 &&
-        !l.startsWith('//') &&
-        !l.startsWith('/*') &&
-        !l.startsWith('*'),
-    )
-    .join('\n');
-}
-
-describe('provider snapshot type parity (coder ↔ web)', () => {
-  // Includes the nested types ProviderSnapshotEntry references, so structural
-  // drift anywhere in the snapshot surface is caught.
-  const names = [
-    'ProviderSnapshotStatus',
-    'ProviderSnapshotEntry',
-    'ProviderModel',
-    'ProviderMode',
-    'ThinkingOption',
-    'AgentCommand',
-  ];
-  for (const name of names) {
-    it(`${name} is identical in both copies`, () => {
-      expect(
-        extractBlock(webSrc, name),
-        `${name} drifted between apps/coder/src/services/provider-types.ts and apps/web/src/api/types.ts`,
-      ).toBe(extractBlock(coderSrc, name));
-    });
-  }
-});