docs: add missing voice-call CLI commands and contract test section to testing

docs/help/testing.md

@@ -461,6 +461,55 @@ Future evals should stay deterministic first:
 - A small suite of skill-focused scenarios (use vs avoid, gating, prompt injection).
 - Optional live evals (opt-in, env-gated) only after the CI-safe suite is in place.
 
+## Contract tests (plugin and channel shape)
+
+Contract tests verify that every registered plugin and channel conforms to its
+interface contract. They iterate over all discovered plugins and run a suite of
+shape and behavior assertions.
+
+### Commands
+
+- All contracts: `pnpm test:contracts`
+- Channel contracts only: `pnpm test:contracts:channels`
+- Provider contracts only: `pnpm test:contracts:plugins`
+
+### Channel contracts
+
+Located in `src/channels/plugins/contracts/*.contract.test.ts`:
+
+- **plugin** - Basic plugin shape (id, name, capabilities)
+- **setup** - Setup wizard contract
+- **session-binding** - Session binding behavior
+- **outbound-payload** - Message payload structure
+- **inbound** - Inbound message handling
+- **actions** - Channel action handlers
+- **threading** - Thread ID handling
+- **directory** - Directory/roster API
+- **group-policy** - Group policy enforcement
+- **status** - Channel status probes
+- **registry** - Plugin registry shape
+
+### Provider contracts
+
+Located in `src/plugins/contracts/*.contract.test.ts`:
+
+- **auth** - Auth flow contract
+- **auth-choice** - Auth choice/selection
+- **catalog** - Model catalog API
+- **discovery** - Plugin discovery
+- **loader** - Plugin loading
+- **runtime** - Provider runtime
+- **shape** - Plugin shape/interface
+- **wizard** - Setup wizard
+
+### When to run
+
+- After changing plugin-sdk exports or subpaths
+- After adding or modifying a channel or provider plugin
+- After refactoring plugin registration or discovery
+
+Contract tests run in CI and do not require real API keys.
+
 ## Adding regressions (guidance)
 
 When you fix a provider/model issue discovered in live:

docs/plugins/voice-call.md

@@ -312,14 +312,21 @@ Auto-responses use the agent system. Tune with:
 
 ```bash
 openclaw voicecall call --to "+15555550123" --message "Hello from OpenClaw"
+openclaw voicecall start --to "+15555550123"   # alias for call
 openclaw voicecall continue --call-id <id> --message "Any questions?"
 openclaw voicecall speak --call-id <id> --message "One moment"
 openclaw voicecall end --call-id <id>
 openclaw voicecall status --call-id <id>
 openclaw voicecall tail
+openclaw voicecall latency                     # summarize turn latency from logs
 openclaw voicecall expose --mode funnel
 ```
 
+`latency` reads `calls.jsonl` from the default voice-call storage path. Use
+`--file <path>` to point at a different log and `--last <n>` to limit analysis
+to the last N records (default 200). Output includes p50/p90/p99 for turn
+latency and listen-wait times.
+
 ## Agent tool
 
 Tool name: `voice_call`