yoloyolo/.planning/milestones/v1.1-phases/07-custom-rules-and-print-config/07-01-SUMMARY.md

phase, plan, subsystem, tags, dependency_graph, tech_stack, key_files, decisions, metrics

phase	plan	subsystem	tags	dependency_graph	tech_stack	key_files	decisions	metrics
07-custom-rules-and-print-config	01	config	config rules tdd classification auto-freq	requires provides affects LoadResult RawRule validateRules convertRules autoAssignFreq addAutoFreqEntries cmd/netsynth/main.go	added patterns hash/fnv LoadResult-struct FNV-32a-deterministic-hash TDD-red-green	created modified config/config.go config/config_test.go cmd/netsynth/main.go	addAutoFreqEntries runs before merge so [sounds.X] overrides apply to user-defined classes merge() warning for unknown class names still fires for [sounds.X] where X is neither built-in nor in rules -- acceptable harmless warning main.go call site updated to use LoadResult.FreqCfgs -- minimal fix to keep compile; full wiring deferred to Plan 02	duration completed tasks_completed files_modified 3min 2026-03-26T20:45:08Z 1 3

Phase 7 Plan 01: Config Rule Parsing and LoadResult Summary

Extend config package to parse [[rules]] TOML blocks, validate them, auto-assign frequencies for new class names using FNV-32a, and return a LoadResult struct from Load().

What Was Built

config.Load() now returns LoadResult{FreqCfgs, UserRules, ConfigPath} instead of a bare map. The new struct is the data contract for Plan 02's CLI wiring and --print-config output.

New types and functions in config/config.go:

• RawRule struct: Port *uint16, Protocol string, Class string — pointer Port to distinguish missing vs zero
• LoadResult struct: FreqCfgs, UserRules []classify.Rule, ConfigPath string
• validateRules(): checks protocol required, class required, valid protocols (tcp/udp/icmp)
• convertRules(): converts []RawRule to []classify.Rule
• autoAssignFreq(): FNV-32a hash → deterministic Hz in [1200, 2350] range (24 steps of 50Hz)
• addAutoFreqEntries(): creates FreqConfig entries for new class names, skips built-ins
• Import: hash/fnv

Key operation order: addAutoFreqEntries runs before merge so that [sounds.MyApp] sound overrides apply to user-defined classes that were added by auto-freq.

Tasks Completed

Task	Name	Commit	Files
1	RawRule, LoadResult, validation, conversion, auto-freq with TDD	4b365cd	config/config.go, config/config_test.go, cmd/netsynth/main.go

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Bug] Operation order: addAutoFreqEntries must run before merge

• Found during: Task 1 GREEN phase
• Issue: Plan's action section said "merge first, then addAutoFreqEntries" but this caused [sounds.MyApp] overrides to be ignored for user-defined classes (merge only applies to classes already in the map)
• Fix: Reversed the order — addAutoFreqEntries first (creates the entry), then merge (applies sound overrides)
• Files modified: config/config.go
• Commit: 4b365cd

2. [Rule 3 - Blocking] main.go call site updated to use LoadResult

• Found during: Task 1 GREEN phase
• Issue: Plan notes this break is expected but tests wouldn't compile without it
• Fix: Minimal one-line update: loadResult, err := config.Load(...) + freqCfgs := loadResult.FreqCfgs
• Files modified: cmd/netsynth/main.go
• Commit: 4b365cd

Test Coverage

21 tests total (8 existing + 13 new):

• TestLoadCustomRules - TOML rules block with port/protocol/class
• TestLoadCustomRuleNoPort - optional port field, DstPort=0 when absent
• TestLoadCustomRuleMissingProtocol - validation error "protocol is required"
• TestLoadCustomRuleMissingClass - validation error "class is required"
• TestLoadCustomRuleInvalidProtocol - validation error "invalid protocol"
• TestLoadCustomRuleUnknownField - undecoded TOML field error
• TestUserRulesPrepend - UserRules field usable for prepend pattern
• TestAutoFreqAssignment - BaseHz in [1200, 2350], WaveformSine
• TestAutoFreqDeterministic - same class name produces same Hz
• TestAutoFreqSkipsBuiltins - HTTPS stays at 175.0 default
• TestLoadResultConfigPath - ConfigPath populated correctly
• TestLoadNoConfigReturnsLoadResult - returns LoadResult with empty UserRules
• All 8 existing tests updated to use result.FreqCfgs

Known Stubs

None. All new functions are fully implemented and tested.

Self-Check: PASSED