yoloyolo/.planning/phases/06-config-package-and-sound-overrides/06-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
06-config-package-and-sound-overrides	02	cmd/encode	cli config RunSynthesis dependency-injection cobra	phase provides 06-01 config.Load(configPath string) returns map[classify.TrafficClass]synth.FreqConfig phase provides 05-waveform-types-and-bank-decoupling NewBank(tau, cfgs) with injected config map, FreqConfig.WaveformType	--config flag in CLI (CFG-03) config.Load called at startup before capture (D-11 fail fast) RunSynthesis(snapshots, outputPath, freqCfgs) with injected config map (D-10) Merged config flows end-to-end TOML file -> config.Load -> RunSynthesis -> NewBank	encode/mp3.go (RunSynthesis signature changed) cmd/netsynth/main.go (--config flag, config.Load, pass freqCfgs through pipeline)	added patterns Dependency injection: config map flows from main() through runLiveMode/runPcapMode to RunSynthesis to NewBank Fail-fast config loading: config.Load called after BPF validation, before capture starts (D-11) Explicit configPath string var for --config flag, empty string triggers auto-discovery	created modified encode/mp3.go encode/mp3_test.go cmd/netsynth/main.go	Option A for freqCfgs propagation: pass as parameter to runLiveMode/runPcapMode rather than package-level var — explicit data flow, easier to test config.Load called before output path resolution — config errors abort before any state changes	Config map injected at call boundary (main -> run -> runLiveMode/runPcapMode -> RunSynthesis -> NewBank)	CFG-03	2min	2026-03-26

Phase 6 Plan 02: CLI Config Wiring Summary

--config flag added to Cobra, config.Load wired at startup, RunSynthesis signature changed to accept injected freqCfgs map — end-to-end config flow from TOML file to synthesis

Performance

• Duration: ~2 min
• Started: 2026-03-26T20:01:59Z
• Completed: 2026-03-26T20:04:27Z
• Tasks: 2
• Files modified: 3 (encode/mp3.go, encode/mp3_test.go, cmd/netsynth/main.go)

Accomplishments

• Changed RunSynthesis third parameter: accepts freqCfgs map[classify.TrafficClass]synth.FreqConfig (D-10)
• Updated all 3 RunSynthesis call sites in encode tests to pass synth.ClassFreqConfigs
• Added configPath string var and --config flag registration in Cobra (CFG-03)
• Imported config and synth packages into cmd/netsynth/main.go
• Wired config.Load(configPath) into run() after BPF validation, before capture (D-11)
• Changed runLiveMode and runPcapMode signatures to accept freqCfgs parameter
• Updated both encode.RunSynthesis call sites to pass freqCfgs
• Full test suite passes: 7 packages, all green

Task Commits

1. Task 1 - 3dfcbbe feat(06-02): add freqCfgs parameter to RunSynthesis
2. Task 2 - 413cceb feat(06-02): wire --config flag and config.Load into CLI pipeline

Files Created/Modified

• encode/mp3.go - RunSynthesis now accepts freqCfgs map[classify.TrafficClass]synth.FreqConfig; uses freqCfgs in synth.NewBank(1.0, freqCfgs) call
• encode/mp3_test.go - Updated 3 RunSynthesis calls to pass synth.ClassFreqConfigs as third arg
• cmd/netsynth/main.go - configPath var, --config flag, config and synth imports, config.Load call, updated function signatures, updated RunSynthesis calls

Decisions Made

• Option A for freqCfgs propagation: Pass config map as function parameter to runLiveMode/runPcapMode rather than storing in a package-level variable. Cleaner data flow, functions remain testable in isolation.
• config.Load position in run(): Called after BPF filter validation, before output path resolution and capture start. Config errors abort immediately before any I/O begins (D-11).

Deviations from Plan

None - plan executed exactly as written. The worktree required a rebase onto local master to include phase 05 bank-decoupling code (NewBank 2-arg signature) and phase 06-01 config package before implementation could begin — this is expected prerequisite resolution, not a deviation.

Issues Encountered

• Worktree was based on origin/master (commit 41e2278, pre-phase-05). Rebased onto local master (936aeea) to get WaveformType, 2-arg NewBank, and config package. No code conflicts.

User Setup Required

None.

Next Phase Readiness

• Full end-to-end config flow is wired: user creates netsynth.toml -> --config passes path -> config.Load merges -> RunSynthesis uses merged map -> NewBank synthesizes with custom frequencies/waveforms
• Phase 06-03 (if any) can build on this wired pipeline for additional config features

Self-Check: PASSED

• FOUND: encode/mp3.go — contains func RunSynthesis(snapshots []classify.WindowSnapshot, outputPath string, freqCfgs map[classify.TrafficClass]synth.FreqConfig) error
• FOUND: encode/mp3_test.go — contains RunSynthesis(snaps, tmpPath, synth.ClassFreqConfigs)
• FOUND: cmd/netsynth/main.go — contains configPath string, config.Load(configPath), runLiveMode(cmd, freqCfgs)
• FOUND: 3dfcbbe (Task 1 commit)
• FOUND: 413cceb (Task 2 commit)

---

Phase: 06-config-package-and-sound-overrides Completed: 2026-03-26