fix(deps): add missing zod dependency to Calendar and Chat web apps for CI

Fixes CI/CD frozen-lockfile failure. The pnpm-lock.yaml had zod entries for
Calendar and Chat web apps, but their package.json files were missing the
dependency. This mismatch caused CI builds to fail.

Added zod@^3.25.76 to:
- apps/calendar/apps/web/package.json
- apps/chat/apps/web/package.json

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/calendar/apps/web/package.json

@@ -54,7 +54,8 @@
 		"lucide-svelte": "^0.559.0",
 		"suncalc": "^1.9.0",
 		"svelte-dnd-action": "^0.9.68",
-		"svelte-i18n": "^4.0.1"
+		"svelte-i18n": "^4.0.1",
+		"zod": "^3.25.76"
 	},
 	"type": "module"
 }

apps/chat/apps/web/package.json

@@ -45,6 +45,7 @@
 		"@manacore/shared-ui": "workspace:*",
 		"@manacore/shared-utils": "workspace:*",
 		"marked": "^17.0.0",
-		"svelte-i18n": "^4.0.1"
+		"svelte-i18n": "^4.0.1",
+		"zod": "^3.25.76"
 	}
 }