feat: add /login command to command palette

Add login command to enable account management via command palette.
Supports read-only accounts (npub, nip-05, hex, nprofile) and will
support browser extension (NIP-07) via dialog.

Changes:
- Added login command to man pages with full documentation
- Command parser uses createAccountFromInput() from login-parser
- Supports direct login: `login npub1...` or `login alice@nostr.com`
- Opens dialog when called without arguments: `login`
- Added "login-handler" to AppId type

Example usage:
- `login` - Open login dialog
- `login npub1abc...` - Add read-only account from npub
- `login alice@nostr.com` - Add read-only account from NIP-05

Build successful.

src/types/app.ts

@@ -18,7 +18,8 @@ export type AppId =
   | "conn"
   | "spells"
   | "spellbooks"
-  | "win";
+  | "win"
+  | "login-handler";
 
 export interface WindowInstance {
   id: string;

src/types/man.ts

@@ -5,6 +5,7 @@ import { parseOpenCommand } from "@/lib/open-parser";
 import { parseProfileCommand } from "@/lib/profile-parser";
 import { parseRelayCommand } from "@/lib/relay-parser";
 import { resolveNip05Batch } from "@/lib/nip05";
+import { createAccountFromInput } from "@/lib/login-parser";
 
 export interface ManPageEntry {
   name: string;
@@ -92,6 +93,53 @@ export const manPages: Record<string, ManPageEntry> = {
     category: "System",
     defaultProps: { cmd: "help" },
   },
+  login: {
+    name: "login",
+    section: "1",
+    synopsis: "login [identifier]",
+    description:
+      "Add a new Nostr account to Grimoire. Supports read-only accounts (npub, nip-05, hex pubkey, nprofile) and signing accounts (browser extension via NIP-07). When called without arguments, opens the login dialog with method selection.",
+    options: [
+      {
+        flag: "[identifier]",
+        description:
+          "Account identifier: npub1..., user@domain.com, hex pubkey, nprofile1..., or leave empty to open dialog",
+      },
+    ],
+    examples: [
+      "login                          Open login dialog",
+      "login npub1abc...              Add read-only account from npub",
+      "login alice@nostr.com          Add read-only account from NIP-05",
+      "login nprofile1...             Add read-only account with relay hints",
+      "login 3bf0c63f...              Add read-only account from hex pubkey",
+    ],
+    seeAlso: ["profile", "req"],
+    appId: "login-handler",
+    category: "System",
+    argParser: async (args: string[]) => {
+      const input = args.join(" ").trim();
+
+      // No input - open dialog
+      if (!input) {
+        return { action: "open-dialog" };
+      }
+
+      // Try to create account from input
+      try {
+        const account = await createAccountFromInput(input);
+        return {
+          action: "add-account",
+          account,
+        };
+      } catch (error) {
+        return {
+          action: "error",
+          message: error instanceof Error ? error.message : "Unknown error",
+        };
+      }
+    },
+    defaultProps: { action: "open-dialog" },
+  },
   kinds: {
     name: "kinds",
     section: "1",