docs(06-02): complete CLI config wiring plan summary and state updates

.planning/REQUIREMENTS.md

@@ -11,7 +11,7 @@ Requirements for custom sound mappings milestone. Each maps to roadmap phases.
 
 - [x] **CFG-01**: User can create a TOML config file that overrides default sound mappings
 - [x] **CFG-02**: Tool auto-discovers config from `./netsynth.toml` or `~/.config/netsynth/config.toml` (silent if absent)
-- [ ] **CFG-03**: User can specify an explicit config path via `--config` flag (error if file missing)
+- [x] **CFG-03**: User can specify an explicit config path via `--config` flag (error if file missing)
 - [x] **CFG-04**: User can override individual values without replicating the entire default config (partial override)
 - [x] **CFG-05**: Unknown keys in config file produce a clear error with the typo'd key name
 - [ ] **CFG-06**: User can run `netsynth --print-config` to see the effective config as commented TOML
@@ -58,7 +58,7 @@ Which phases cover which requirements. Updated during roadmap creation.
 |-------------|-------|--------|
 | CFG-01 | Phase 6 | Complete |
 | CFG-02 | Phase 6 | Complete |
-| CFG-03 | Phase 6 | Pending |
+| CFG-03 | Phase 6 | Complete |
 | CFG-04 | Phase 6 | Complete |
 | CFG-05 | Phase 6 | Complete |
 | CFG-06 | Phase 7 | Pending |

.planning/ROADMAP.md

@@ -24,7 +24,7 @@ Full details: `.planning/milestones/v1.0-ROADMAP.md`
 **Milestone Goal:** Users can customize how traffic sounds via a TOML config file — setting custom frequencies, waveform types, and their own classification rules with named sounds.
 
 - [x] **Phase 5: Waveform Types and Bank Decoupling** - Internal refactors establishing waveform enum and injectable bank signature (completed 2026-03-26)
-- [ ] **Phase 6: Config Package and Sound Overrides** - TOML loading, auto-discovery, partial merge, and frequency/waveform overrides wired end-to-end
+- [x] **Phase 6: Config Package and Sound Overrides** - TOML loading, auto-discovery, partial merge, and frequency/waveform overrides wired end-to-end (completed 2026-03-26)
 - [ ] **Phase 7: Custom Rules and Print-Config** - User-defined classification rules and --print-config UX
 
 ## Phase Details
@@ -53,11 +53,11 @@ Plans:
   3. User passes `--config /path/to/custom.toml` and the tool uses that file; if the file does not exist, the tool exits with a clear error before capture begins
   4. User types `frequncy = 440` in their config file and the tool exits at startup with an error naming `frequncy` as an unrecognized key
   5. User sets waveform for one class in TOML and leaves all other classes at their defaults — the unspecified classes are unchanged
-**Plans:** 1/2 plans executed
+**Plans:** 2/2 plans complete
 
 Plans:
 - [x] 06-01-PLAN.md — Config package: TOML load, validate, merge with TDD (config/config.go, config/config_test.go)
-- [ ] 06-02-PLAN.md — CLI wiring: --config flag, RunSynthesis signature change, main.go integration
+- [x] 06-02-PLAN.md — CLI wiring: --config flag, RunSynthesis signature change, main.go integration
 
 ### Phase 7: Custom Rules and Print-Config
 **Goal**: Users can define their own traffic classification rules in TOML, assign custom sounds to them, and inspect the full effective config before capture begins
@@ -79,5 +79,5 @@ Plans:
 | 3. Pipeline Integration and MVP | v1.0 | 2/2 | Complete | 2026-03-26 |
 | 4. Power User Features | v1.0 | 2/2 | Complete | 2026-03-26 |
 | 5. Waveform Types and Bank Decoupling | v1.1 | 2/2 | Complete   | 2026-03-26 |
-| 6. Config Package and Sound Overrides | v1.1 | 1/2 | In Progress|  |
+| 6. Config Package and Sound Overrides | v1.1 | 2/2 | Complete   | 2026-03-26 |
 | 7. Custom Rules and Print-Config | v1.1 | 0/? | Not started | - |

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.1
 milestone_name: Custom Sound Mappings
 status: executing
-stopped_at: Phase 6 context gathered
+stopped_at: Completed 06-02-PLAN.md
-last_updated: "2026-03-26T19:53:17.089Z"
+last_updated: "2026-03-26T20:05:36.244Z"
-last_activity: 2026-03-26 -- Phase 06 execution started
+last_activity: 2026-03-26
 progress:
   total_phases: 3
-  completed_phases: 1
+  completed_phases: 2
   total_plans: 4
-  completed_plans: 2
+  completed_plans: 4
   percent: 0
 ---
 
@@ -26,9 +26,9 @@ See: .planning/PROJECT.md (updated 2026-03-26)
 ## Current Position
 
 Phase: 06 (config-package-and-sound-overrides) — EXECUTING
-Plan: 1 of 2
+Plan: 2 of 2
-Status: Executing Phase 06
+Status: Ready to execute
-Last activity: 2026-03-26 -- Phase 06 execution started
+Last activity: 2026-03-26
 
 Progress: [░░░░░░░░░░] 0%
 
@@ -52,6 +52,7 @@ Progress: [░░░░░░░░░░] 0%
 **Recent Trend:** Stable
 | Phase 05 P01 | 3min | 2 tasks | 3 files |
 | Phase 05 P02 | 4 | 2 tasks | 4 files |
+| Phase 06 P02 | 2 | 2 tasks | 3 files |
 
 ## Accumulated Context
 
@@ -64,6 +65,8 @@ Progress: [░░░░░░░░░░] 0%
 - [Phase 05]: WaveformType zero value is WaveformCustom — all 14 existing ClassFreqConfigs entries retain hand-tuned harmonics without modification
 - [Phase 05]: NewBank accepts injected config map instead of reading ClassFreqConfigs global — injection seam for Phase 6 config loading
 - [Phase 05]: gainPerLayer computed as 1.0/float64(len(cfgs)) — correct for any class count, no-clip guarantee preserved
+- [Phase 06]: Option A for freqCfgs propagation: pass as parameter to runLiveMode/runPcapMode — cleaner data flow vs package-level var
+- [Phase 06]: config.Load positioned after BPF validation, before output path resolution — ensures fail-fast before any I/O (D-11)
 
 ### Pending Todos
 
@@ -75,6 +78,6 @@ None.
 
 ## Session Continuity
 
-Last session: 2026-03-26T19:39:13.119Z
+Last session: 2026-03-26T20:05:36.237Z
-Stopped at: Phase 6 context gathered
+Stopped at: Completed 06-02-PLAN.md
-Resume file: .planning/phases/06-config-package-and-sound-overrides/06-CONTEXT.md
+Resume file: None

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

@@ -0,0 +1,119 @@
+---
+phase: 06-config-package-and-sound-overrides
+plan: 02
+subsystem: cmd/encode
+tags: [cli, config, RunSynthesis, dependency-injection, cobra]
+
+# Dependency graph
+requires:
+  - phase: 06-01
+    provides: config.Load(configPath string) returns map[classify.TrafficClass]synth.FreqConfig
+  - phase: 05-waveform-types-and-bank-decoupling
+    provides: NewBank(tau, cfgs) with injected config map, FreqConfig.WaveformType
+
+provides:
+  - --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
+
+affects:
+  - encode/mp3.go (RunSynthesis signature changed)
+  - cmd/netsynth/main.go (--config flag, config.Load, pass freqCfgs through pipeline)
+
+# Tech tracking
+tech-stack:
+  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"
+
+key-files:
+  created: []
+  modified:
+    - encode/mp3.go
+    - encode/mp3_test.go
+    - cmd/netsynth/main.go
+
+key-decisions:
+  - "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"
+
+patterns-established:
+  - "Config map injected at call boundary (main -> run -> runLiveMode/runPcapMode -> RunSynthesis -> NewBank)"
+
+requirements-completed: [CFG-03]
+
+# Metrics
+duration: 2min
+completed: 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*