Update Nix flake inputs

[github-actions]

Automated changes by the update-flake-lock GitHub Action.

Flake lock file updates:

• Updated input 'agent-context':
    'path:./agent-context'
  → 'path:./agent-context'
• Updated input 'bench-filesystem':
    'path:./bench/filesystem'
  → 'path:./bench/filesystem'
• Updated input 'examples':
    'path:./examples'
  → 'path:./examples'
• Updated input 'home-manager':
    'github:nix-community/home-manager/bd42777' (2026-06-09)
  → 'github:nix-community/home-manager/74887ea' (2026-06-10)
• Updated input 'images':
    'path:./images'
  → 'path:./images'
• Updated input 'site':
    'path:./site'
  → 'path:./site'
• Updated input 'skills':
    'path:./skills'
  → 'path:./skills'
• Updated input 'snix-src':
    'git+https://git.snix.dev/snix/snix?ref=canon&rev=146233821c1fb22da3e863223fcf67d91d056ab4' (2026-06-09)
  → 'git+https://git.snix.dev/snix/snix?ref=canon&rev=4535b02298cdb2f81c4ba0ce7ead2d3f354af9e4' (2026-06-10)
• Updated input 'tests':
    'path:./tests'
  → 'path:./tests'

Running GitHub Actions on this PR

GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action.

To run GitHub Actions workflows on this PR, close and re-open this pull request.