Use yaml config file format

[mkopec]

Use yaml instead of libconfig.

[mkopec]

@claude

[claude]

Claude finished @mkopec's task in 3m 2s —— View job • claude/issue-3-20260320-1822 • Create PR ➔

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Working on Issue #3: Use yaml config file format

• Gather context (explored codebase)
• Understand current libconfig usage
• Replace libconfig with libyaml in config.c
• Update fand.conf to YAML format
• Update Makefile (-lconfig → -lyaml)
• Update PKGBUILD dependencies
• Commit and push

Summary

Replaced libconfig with libyaml across the project:

• config.c — Rewrote the config parser using libyaml's event-based API. Implemented a recursive descent parser that handles the same zone/sensor/fan/curve structure, now reading YAML instead of libconfig format.
• fand.conf — Converted from libconfig syntax to standard YAML:

  zones:
    - sensors:
        - path: /sys/class/hwmon/hwmon7
          index: 1
          offset: 0
      fans:
        - path: /sys/class/hwmon/hwmon4
          index: 1
          curve:
            temperatures: [25, 30, 37, 40]
            speeds: [55, 80, 220, 255]

• Makefile — Changed -lconfig to -lyaml
• PKGBUILD — Added libyaml as a makedepend (replacing the implicit libconfig dependency)