find -not flag incorrectly inverts all conditions instead of only the next predicate

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Description

In tools/find/find.go, when -not is passed, cfg.Invert = true is set globally. Inside evaluateConditions, every condition check independently applies if cfg.Invert { matched = !matched }. This means -not inverts all predicates simultaneously.

GNU find applies -not only to the immediately following predicate.

Steps to Reproduce

# Intended: find non-.go regular files
aict find . -not -name "*.go" -type f

# Actual: also inverts -type f, so returns directories named *.go (nonsensical)

Expected Behavior

-not -name "*.go" -type f should return regular files whose name does not match *.go.

Proposed Fix

Change Invert from a global bool to a per-condition flag. Parse predicates in order and associate the invert flag with the immediately following condition only.

Related

tools/find/find.go parseFlags and evaluateConditions