fix(manacore/web): float DateStrip at bottom, remove sidebar

Position DateStrip fixed above PillNav with glass blur effect.
Remove MiniCalendar sidebar to give calendar view full width.
Restore @clock/shared package from archive (needed by clock module).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/clock/packages/shared/package.json

@@ -0,0 +1,19 @@
+{
+	"name": "@clock/shared",
+	"version": "0.2.0",
+	"private": true,
+	"type": "module",
+	"main": "./src/index.ts",
+	"exports": {
+		".": "./src/index.ts",
+		"./types": "./src/types/index.ts",
+		"./constants": "./src/constants/index.ts"
+	},
+	"scripts": {
+		"type-check": "tsc --noEmit",
+		"lint": "eslint src"
+	},
+	"devDependencies": {
+		"typescript": "^5.7.2"
+	}
+}