refactor: tighten function size baseline from 443 to 179 (#2029)

The recent batch of function extraction PRs (#2026, #2027, #2028) reduced
oversized functions (>60 lines) from 443 to 179. Update the architecture
test baseline to lock in these gains and prevent regression.

Co-authored-by: Ben Coombs <bjcoombs@users.noreply.github.com>

Author: bjcoombs

tests/architecture/size_test.go

@@ -17,8 +17,8 @@ const (
 	// baselineOversizedFunctions is the number of functions exceeding maxFunctionLines
 	// at the time this test was introduced. The test fails if this count increases,
 	// preventing new violations while allowing gradual cleanup.
-	// Last measured: 2026-03-28 (develop branch at be7b91a7)
-	baselineOversizedFunctions = 443
+	// Last measured: 2026-03-28 (develop branch at 6dc95916)
+	baselineOversizedFunctions = 179
 )
 
 // knownOversizedFiles tracks files that currently exceed the size limit.