feat: initialize markr nostr bookmark client

- Add project structure with TypeScript, React, and Vite
- Implement nostr authentication using browser extension (NIP-07)
- Add NIP-51 compliant bookmark fetching and display
- Create minimal UI with login and bookmark components
- Integrate applesauce-core and applesauce-react libraries
- Add responsive styling with dark/light mode support
- Include comprehensive README with setup instructions

This is a minimal MVP for a nostr bookmark client that allows users to
view their bookmarks according to NIP-51 specification.

node_modules/light-bolt11-decoder/bolt11.d.ts

@@ -0,0 +1,89 @@
+declare module "light-bolt11-decoder" {
+  type NetworkSection = {
+    name: 'coin_network';
+    letters: string;
+    value?: {
+      bech32: string;
+      pubKeyHash: number;
+      scriptHash: number;
+      validWitnessVersions: number[];
+    };
+  };
+
+  type FeatureBits = {
+    option_data_loss_protect: string;
+    initial_routing_sync: string;
+    option_upfront_shutdown_script: string;
+    gossip_queries: string;
+    var_onion_optin: string;
+    gossip_queries_ex: string;
+    option_static_remotekey: string;
+    payment_secret: string;
+    basic_mpp: string;
+    option_support_large_channel: string;
+    extra_bits: {
+      start_bit: number;
+      bits: unknown[];
+      has_required: boolean;
+    };
+  };
+
+  type RouteHint = {
+    pubkey: string;
+    short_channel_id: string;
+    fee_base_msat: number;
+    fee_proportional_millionths: number;
+    cltv_expiry_delta: number;
+  };
+
+  type RouteHintSection = {
+    name: "route_hint";
+    tag: "r";
+    letters: string;
+    value: RouteHint[];
+  };
+
+  type FeatureBitsSection = {
+    name: "feature_bits";
+    tag: "9";
+    letters: string;
+    value: FeatureBits;
+  };
+
+  type Section =
+    | { name: "paymentRequest"; value: string }
+    | { name: "expiry"; value: number }
+    | { name: "checksum"; letters: string }
+    | NetworkSection
+    | { name: "amount"; letters: string; value: string }
+    | { name: "separator"; letters: string }
+    | { name: "timestamp"; letters: string; value: number }
+    | { name: "payment_hash"; tag: "p"; letters: string; value: string }
+    | { name: "description"; tag: "d"; letters: string; value: string }
+    | { name: "payment_secret"; tag: "s"; letters: string; value: string }
+    | {
+        name: "min_final_cltv_expiry";
+        tag: "c";
+        letters: string;
+        value: number;
+      }
+    | FeatureBitsSection
+    | RouteHintSection
+    | { name: "signature"; letters: string; value: string };
+
+  type PaymentJSON = {
+    paymentRequest: string;
+    sections: Section[];
+    expiry: number;
+    route_hints: RouteHint[][];
+  };
+
+  type DecodedInvoice = {
+    paymentRequest: string;
+    sections: Section[];
+    expiry: number;
+    route_hints: RouteHint[][];
+  };
+
+  function decode(invoice: string): DecodedInvoice;
+}