romshark / templier / 27151477313

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feat(config): add watcher-ignore option (#22)

Add `watcher-ignore` config option.

watcher-ignore takes glob patterns (relative to app.dir-src-root)
added to the watcher's ignore set before startup, so matches are
skipped by the directory walk and the startup checksum walk and
produce no events. Unlike app.exclude (skips rebuilds only; files
stay watched, custom watchers still fire), it drops the path entirely.

Use it to keep large trees (e.g. node_modules) out of the watcher:
avoids exhausting the OS watch-descriptor limit, skips checksumming
them at startup, and stops custom watchers firing on them.

It also sidesteps the startup crash on directory symlinks, but that's
a workaround, not a fix for the walk's mishandling of them.

Make config loading use yamagiconf.WithOptionalPresence so configs
without watcher-ignore still parse; doc clarifications for app.exclude
vs watcher-ignore.

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