Nim's varargs doesn't consume the last positional argument when there's
a trailing parameter with a default value. This caused calls like
`runGit("fetch", "origin")` to be parsed as:
- args = ["fetch"]
- workDir = "origin"
Instead of the intended:
- args = ["fetch", "origin"]
- workDir = ""
Fixed by changing from varargs to openArray, which requires explicit
array syntax at call sites: `runGit(["fetch", "origin"])`.
Also includes P2 bug fixes:
- Start heartbeat before state transition (skills-qekj)
- Reject symlinks when reading context file (skills-16zf)
- Case-insensitive conflict detection (skills-n3qp)
Smoke tested: spawn, status, start, show, cancel all work.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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