• docs/guide/leases.md
  • Updated the documented path for lease credentials storage to reflect the new XDG state directory location.
• src/env.rs
  • Introduced FNOX_STATE_DIR as a new static variable to define the application's state directory.
  • Configured FNOX_STATE_DIR to be overrideable via the FNOX_STATE_DIR environment variable.
  • Set platform-specific default paths for FNOX_STATE_DIR: ~/.local/state/fnox for Unix and ~/AppData/Local/fnox for Windows.
• src/lease.rs
  • Modified the LeaseLedger::ledger_path function to construct paths using the newly defined FNOX_STATE_DIR.
  • Implemented migration logic to check for existing lease ledger files in the old ~/.config/fnox/leases/ location.
  • Added automatic renaming of old ledger files and their corresponding lock files to the new state directory.
  • Included error handling and logging for migration failures, with a fallback to the old path if migration is unsuccessful.

• The pull request description indicates that it was generated with Claude Code.

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1. src/lease.rs, line 108-119 (link)

   Migration code promised but not implemented

   The PR description explicitly states "Automatically migrates existing ledger files (and lock files) on first access," and the test plan includes a step to verify migration of ~/.config/fnox/leases/. However, LeaseLedger::load only checks the new FNOX_STATE_DIR-based path. If the file doesn't exist there, it silently returns an empty ledger:

   if !path.exists() {
       return Ok(Self::default());
   }

   There is no code that looks for ledger files at the old FNOX_CONFIG_DIR.join("leases") path or copies/moves them to the new location. For any existing user with leases cached at ~/.config/fnox/leases/<hash>.toml, all cached credentials will be silently dropped on upgrade — fnox will just create new leases instead of reusing the cached ones.

   The advertised migration should be implemented before merging, something like:

   pub fn load(project_dir: &Path) -> Result<Self> {
       let path = Self::ledger_path(project_dir);
       if !path.exists() {
           // Attempt migration from old config-dir location
           let old_path = env::FNOX_CONFIG_DIR
               .join("leases")
               .join(path.file_name().unwrap());
           if old_path.exists() {
               if let Some(parent) = path.parent() {
                   let _ = fs::create_dir_all(parent);
               }
               let _ = fs::rename(&old_path, &path)
                   .or_else(|_| fs::copy(&old_path, &path).map(|_| ()));
               let _ = fs::remove_file(old_path.with_extension("lock"));
           }
           if !path.exists() {
               return Ok(Self::default());
           }
       }
       // … rest of load
   }

2. src/env.rs, line 71-77 (link)

   Silent rejection of invalid env var paths produces no user feedback

   When FNOX_STATE_DIR (or FNOX_CONFIG_DIR) is set to a relative path or an empty string, var_path discards it silently and falls back to the XDG default. This is inconsistent with FNOX_PROFILE, which explicitly prints a warning:

   // From FNOX_PROFILE handling:
   eprintln!("Warning: Invalid FNOX_PROFILE value '{}' ignored …", profile);

   A user who sets FNOX_STATE_DIR=my/relative/path will see their state land in an unexpected default location with no indication that their configuration was ignored. Consider emitting a warning analogous to the profile-name case:

   fn var_path(name: &str) -> Option<PathBuf> {
       let raw = var(name).ok()?;
       if raw.is_empty() {
           return None;
       }
       let p = PathBuf::from(&raw);
       if !p.is_absolute() {
           eprintln!("Warning: {name} value '{raw}' is not an absolute path and will be ignored");
           return None;
       }
       Some(p)
   }