Add user authentication with login/register

- Add users and sessions tables to database schema
- Add bcryptjs for password hashing
- Create auth API routes (login, register, logout, me)
- Add AuthProvider context for client-side auth state
- Update all API routes to require authentication and filter by userId
- Create login and register pages
- Add AppShell component for authenticated layout
- Update all pages to use AppShell and show user info
- Each user now has their own private entries and tags

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

drizzle/meta/0000_snapshot.json

@@ -1,7 +1,7 @@
 {
   "version": "6",
   "dialect": "sqlite",
-  "id": "5116dd80-0292-4345-a403-fd678d148880",
+  "id": "597c7e60-5f2b-4b3c-befb-4c929ccbc227",
   "prevId": "00000000-0000-0000-0000-000000000000",
   "tables": {
     "entries": {
@@ -14,6 +14,13 @@
           "notNull": true,
           "autoincrement": false
         },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
         "date": {
           "name": "date",
           "type": "text",
@@ -59,7 +66,21 @@
         }
       },
       "indexes": {},
-      "foreignKeys": {},
+      "foreignKeys": {
+        "entries_user_id_users_id_fk": {
+          "name": "entries_user_id_users_id_fk",
+          "tableFrom": "entries",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
       "compositePrimaryKeys": {},
       "uniqueConstraints": {},
       "checkConstraints": {}
@@ -123,6 +144,58 @@
       "uniqueConstraints": {},
       "checkConstraints": {}
     },
+    "sessions": {
+      "name": "sessions",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "sessions_user_id_users_id_fk": {
+          "name": "sessions_user_id_users_id_fk",
+          "tableFrom": "sessions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
     "tags": {
       "name": "tags",
       "columns": {
@@ -133,6 +206,13 @@
           "notNull": true,
           "autoincrement": false
         },
+        "user_id": {
+          "name": "user_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
         "name": {
           "name": "name",
           "type": "text",
@@ -148,11 +228,70 @@
           "autoincrement": false
         }
       },
+      "indexes": {},
+      "foreignKeys": {
+        "tags_user_id_users_id_fk": {
+          "name": "tags_user_id_users_id_fk",
+          "tableFrom": "tags",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "users": {
+      "name": "users",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "email": {
+          "name": "email",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "password_hash": {
+          "name": "password_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
       "indexes": {
-        "tags_name_unique": {
-          "name": "tags_name_unique",
+        "users_email_unique": {
+          "name": "users_email_unique",
           "columns": [
-            "name"
+            "email"
           ],
           "isUnique": true
         }

drizzle/meta/_journal.json

@@ -5,8 +5,8 @@
     {
       "idx": 0,
       "version": "6",
-      "when": 1769219562573,
-      "tag": "0000_busy_earthquake",
+      "when": 1769235451953,
+      "tag": "0000_flat_captain_marvel",
       "breakpoints": true
     }
   ]