feat: add QR scanner, improve UX, and simplify navigation

- Add live camera QR scanner for nsec/ncryptsec login
- Replace browser prompt() with proper password dialog for ncryptsec
- Add missing /notes/:id route for thread view navigation
- Remove explore section entirely (button, page, routes)
- Remove profile button from bottom nav, avatar now opens profile
- Remove "Notes" tab from feed, default to showing all posts/replies
- Add PasswordPromptProvider for secure password input
- Add SidebarDrawer for mobile navigation
- Add domain layer with value objects and adapters
- Various UI and navigation improvements

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

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

src/providers/NostrProvider/bunker.signer.ts

@@ -1,66 +0,0 @@
-import { ISigner, TDraftEvent } from '@/types'
-import { bytesToHex, hexToBytes } from '@noble/hashes/utils'
-import { generateSecretKey } from 'nostr-tools'
-import { BunkerSigner as NBunkerSigner, parseBunkerInput } from 'nostr-tools/nip46'
-
-export class BunkerSigner implements ISigner {
-  signer: NBunkerSigner | null = null
-  private clientSecretKey: Uint8Array
-  private pubkey: string | null = null
-
-  constructor(clientSecretKey?: string) {
-    this.clientSecretKey = clientSecretKey ? hexToBytes(clientSecretKey) : generateSecretKey()
-  }
-
-  async login(bunker: string, isInitialConnection = true): Promise<string> {
-    const bunkerPointer = await parseBunkerInput(bunker)
-    if (!bunkerPointer) {
-      throw new Error('Invalid bunker')
-    }
-
-    this.signer = NBunkerSigner.fromBunker(this.clientSecretKey, bunkerPointer, {
-      onauth: (url) => {
-        window.open(url, '_blank')
-      }
-    })
-    if (isInitialConnection) {
-      await this.signer.connect()
-    }
-    return await this.signer.getPublicKey()
-  }
-
-  async getPublicKey() {
-    if (!this.signer) {
-      throw new Error('Not logged in')
-    }
-    if (!this.pubkey) {
-      this.pubkey = await this.signer.getPublicKey()
-    }
-    return this.pubkey
-  }
-
-  async signEvent(draftEvent: TDraftEvent) {
-    if (!this.signer) {
-      throw new Error('Not logged in')
-    }
-    return this.signer.signEvent(draftEvent)
-  }
-
-  async nip04Encrypt(pubkey: string, plainText: string) {
-    if (!this.signer) {
-      throw new Error('Not logged in')
-    }
-    return await this.signer.nip04Encrypt(pubkey, plainText)
-  }
-
-  async nip04Decrypt(pubkey: string, cipherText: string) {
-    if (!this.signer) {
-      throw new Error('Not logged in')
-    }
-    return await this.signer.nip04Decrypt(pubkey, cipherText)
-  }
-
-  getClientSecretKey() {
-    return bytesToHex(this.clientSecretKey)
-  }
-}