flake.lock: Update

Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/c30c795' (2026-08-10)
  → 'github:nix-community/home-manager/0668fdb' (2026-08-13)
• Updated input 'llm-agents':
    'github:numtide/llm-agents.nix/5b6721a' (2026-08-10)
  → 'github:numtide/llm-agents.nix/b006a90' (2026-08-13)
• Updated input 'llm-agents/nixpkgs':
    'github:NixOS/nixpkgs/70ce234' (2026-08-06)
  → 'github:NixOS/nixpkgs/8e2eeb9' (2026-08-11)
• Updated input 'nix-doom-emacs-unstraightened':
    'github:marienz/nix-doom-emacs-unstraightened/1e02867' (2026-08-10)
  → 'github:marienz/nix-doom-emacs-unstraightened/2bad7a4' (2026-08-12)
• Updated input 'nix-doom-emacs-unstraightened/emacs-overlay':
    'github:nix-community/emacs-overlay/39ea301' (2026-08-10)
  → 'github:nix-community/emacs-overlay/74bee45' (2026-08-12)
• Updated input 'nix-stable':
    'github:NixOS/nixpkgs/fcb8fcd' (2026-08-09)
  → 'github:NixOS/nixpkgs/9f78f44' (2026-08-12)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/f13ff45' (2026-08-07)
  → 'github:NixOS/nixpkgs/867dcbc' (2026-08-12)
• Updated input 'nixpkgs-darwin-pinned':
    'github:NixOS/nixpkgs/f13ff45' (2026-08-07)
  → 'github:NixOS/nixpkgs/867dcbc' (2026-08-12)
• Updated input 'pi':
    'github:lukasl-dev/pi.nix/a11f08b' (2026-08-12)
  → 'github:lukasl-dev/pi.nix/a3b5f8d' (2026-08-13)
• Updated input 'pi-memory':
    'github:jayzeng/pi-memory/6b31b46' (2026-08-09)
  → 'github:jayzeng/pi-memory/39e6b99' (2026-08-11)

Author: github-actions[bot]