chore(tsconfig): migrate off deprecated baseUrl

TypeScript 6 deprecates `baseUrl` in favor of resolving `paths`
relative to the file that defines them. Earlier commit (bde40e4)
silenced the warning via `ignoreDeprecations`; this commit does
the actual migration so the warning goes away on its merits.

Changes:

1. tsconfig.base.json: drop `baseUrl: "."`. Add an explicit `./`
   prefix to every `paths` entry so they resolve relative to the
   base config's location (the repo root) — same behavior as
   before, but no baseUrl needed. (TypeScript requires path entries
   to be relative or absolute when baseUrl is absent; bare paths
   like "packages/..." are not allowed.)
2. apps/web-next/tsconfig.json: drop baseUrl. The `@/*` mapping's
   target was already "./src/*" — relative-from-tsconfig-file is
   the new default, so no other change.
3. apps/cms/tsconfig.json: same — drop baseUrl, paths already use
   "./" prefix.
4. apps/storybook/tsconfig.json: same.
5. apps/web-tanstack/tsconfig.json: same.

Generator templates (turbo/generators/templates/feature/tsconfig.json.hbs)
already omit baseUrl, so future-generated features inherit the new
posture.

Reverts the ignoreDeprecations setting added in bde40e4 — no longer
needed.

Verified:
- pnpm typecheck 14/14
- pnpm lint 15/15
- pnpm test 26/26

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/cms/tsconfig.json

@@ -1,7 +1,6 @@
 {
   "extends": "@repo/core-typescript/nextjs.json",
   "compilerOptions": {
-    "baseUrl": ".",
     "paths": {
       "@/*": [
         "./src/*"

apps/storybook/tsconfig.json

@@ -1,7 +1,6 @@
 {
   "extends": "@repo/core-typescript/react-library.json",
   "compilerOptions": {
-    "baseUrl": ".",
     "paths": {
       "@/*": ["./src/*"]
     }

apps/web-next/tsconfig.json

@@ -1,7 +1,6 @@
 {
   "extends": "@repo/core-typescript/nextjs.json",
   "compilerOptions": {
-    "baseUrl": ".",
     "paths": {
       "@/*": [
         "./src/*"

apps/web-tanstack/tsconfig.json

@@ -3,7 +3,6 @@
   "compilerOptions": {
     "lib": ["ES2022", "DOM", "DOM.Iterable"],
     "jsx": "react-jsx",
-    "baseUrl": ".",
     "paths": {
       "@/*": ["./src/*"]
     },

tsconfig.base.json

@@ -1,41 +1,39 @@
 {
   "$schema": "https://json.schemastore.org/tsconfig",
   "compilerOptions": {
-    "ignoreDeprecations": "6.0",
-    "baseUrl": ".",
     "paths": {
-      "@repo/core-shared": ["packages/core-shared/src/index.ts"],
-      "@repo/core-shared/payload": ["packages/core-shared/src/payload/index.ts"],
-      "@repo/core-shared/trpc/init": ["packages/core-shared/src/trpc/init.ts"],
-      "@repo/core-shared/trpc/context": ["packages/core-shared/src/trpc/context.ts"],
-      "@repo/core-cms": ["packages/core-cms/src/index.ts"],
-      "@repo/core-cms/generated-types": ["packages/core-cms/src/generated-types.ts"],
-      "@repo/blog": ["packages/blog/src/index.ts"],
-      "@repo/blog/cms": ["packages/blog/src/integrations/cms/index.ts"],
-      "@repo/blog/api": ["packages/blog/src/integrations/api/router.ts"],
-      "@repo/core-api": ["packages/core-api/src/index.ts"],
-      "@repo/core-trpc": ["packages/core-trpc/src/index.ts"],
-      "@repo/core-ui": ["packages/core-ui/src/index.ts"],
-      "@repo/auth": ["packages/auth/src/index.ts"],
-      "@repo/auth/cms": ["packages/auth/src/integrations/cms/index.ts"],
-      "@repo/auth/api": ["packages/auth/src/integrations/api/router.ts"],
-      "@repo/media": ["packages/media/src/index.ts"],
-      "@repo/media/cms": ["packages/media/src/integrations/cms/index.ts"],
-      "@repo/media/api": ["packages/media/src/integrations/api/index.ts"],
-      "@repo/media/di/bind-production": ["packages/media/src/di/bind-production.ts"],
-      "@repo/marketing-pages": ["packages/marketing-pages/src/index.ts"],
-      "@repo/marketing-pages/cms": ["packages/marketing-pages/src/integrations/cms/index.ts"],
-      "@repo/marketing-pages/api": ["packages/marketing-pages/src/integrations/api/router.ts"],
-      "@repo/navigation": ["packages/navigation/src/index.ts"],
-      "@repo/navigation/cms": ["packages/navigation/src/integrations/cms/index.ts"],
-      "@repo/navigation/api": ["packages/navigation/src/integrations/api/router.ts"],
-      "@repo/core-testing": ["packages/core-testing/src/index.ts"],
-      "@repo/core-testing/factory": ["packages/core-testing/src/factory/index.ts"],
-      "@repo/core-testing/contract": ["packages/core-testing/src/contract/index.ts"],
-      "@repo/core-testing/react": ["packages/core-testing/src/react/index.ts"],
-      "@repo/core-testing/payload": ["packages/core-testing/src/payload/index.ts"],
-      "@repo/core-testing/setup/jsdom": ["packages/core-testing/src/setup/jsdom.ts"],
-      "@repo/core-testing/setup/node": ["packages/core-testing/src/setup/node.ts"]
+      "@repo/core-shared": ["./packages/core-shared/src/index.ts"],
+      "@repo/core-shared/payload": ["./packages/core-shared/src/payload/index.ts"],
+      "@repo/core-shared/trpc/init": ["./packages/core-shared/src/trpc/init.ts"],
+      "@repo/core-shared/trpc/context": ["./packages/core-shared/src/trpc/context.ts"],
+      "@repo/core-cms": ["./packages/core-cms/src/index.ts"],
+      "@repo/core-cms/generated-types": ["./packages/core-cms/src/generated-types.ts"],
+      "@repo/blog": ["./packages/blog/src/index.ts"],
+      "@repo/blog/cms": ["./packages/blog/src/integrations/cms/index.ts"],
+      "@repo/blog/api": ["./packages/blog/src/integrations/api/router.ts"],
+      "@repo/core-api": ["./packages/core-api/src/index.ts"],
+      "@repo/core-trpc": ["./packages/core-trpc/src/index.ts"],
+      "@repo/core-ui": ["./packages/core-ui/src/index.ts"],
+      "@repo/auth": ["./packages/auth/src/index.ts"],
+      "@repo/auth/cms": ["./packages/auth/src/integrations/cms/index.ts"],
+      "@repo/auth/api": ["./packages/auth/src/integrations/api/router.ts"],
+      "@repo/media": ["./packages/media/src/index.ts"],
+      "@repo/media/cms": ["./packages/media/src/integrations/cms/index.ts"],
+      "@repo/media/api": ["./packages/media/src/integrations/api/index.ts"],
+      "@repo/media/di/bind-production": ["./packages/media/src/di/bind-production.ts"],
+      "@repo/marketing-pages": ["./packages/marketing-pages/src/index.ts"],
+      "@repo/marketing-pages/cms": ["./packages/marketing-pages/src/integrations/cms/index.ts"],
+      "@repo/marketing-pages/api": ["./packages/marketing-pages/src/integrations/api/router.ts"],
+      "@repo/navigation": ["./packages/navigation/src/index.ts"],
+      "@repo/navigation/cms": ["./packages/navigation/src/integrations/cms/index.ts"],
+      "@repo/navigation/api": ["./packages/navigation/src/integrations/api/router.ts"],
+      "@repo/core-testing": ["./packages/core-testing/src/index.ts"],
+      "@repo/core-testing/factory": ["./packages/core-testing/src/factory/index.ts"],
+      "@repo/core-testing/contract": ["./packages/core-testing/src/contract/index.ts"],
+      "@repo/core-testing/react": ["./packages/core-testing/src/react/index.ts"],
+      "@repo/core-testing/payload": ["./packages/core-testing/src/payload/index.ts"],
+      "@repo/core-testing/setup/jsdom": ["./packages/core-testing/src/setup/jsdom.ts"],
+      "@repo/core-testing/setup/node": ["./packages/core-testing/src/setup/node.ts"]
     }
   }
 }