docs(homecore-assist): comprehensive README — intent recognition + Ruflo agent bridge
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# homecore-assist
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Voice-activated intent recognition and execution pipeline for HOMECORE with Ruflo agent bridge (P2).
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[](https://crates.io/crates/homecore-assist)
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[](https://github.com/ruvnet/RuView)
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[](../../docs/adr/ADR-133-homecore-assist-ruflo.md)
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**P1 scaffold**: intent recognition via regex patterns, 5 built-in intent handlers (turn on/off, set brightness, cancel), and Ruflo runner trait surface. Real `tokio::process` subprocess integration (P2) allows orchestration with Ruflo agents for complex multi-step actions.
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## What this crate does
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`homecore-assist` is the voice/NLU gateway for HOMECORE. It takes natural language utterances, recognizes which intent they represent, and executes the appropriate action. It provides:
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- **IntentRecognizer trait** — abstraction for matching utterances to intents
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- **RegexIntentRecognizer** — P1 built-in; uses regex patterns (HA classic style)
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- **IntentHandler trait** — abstraction for handling recognized intents
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- **5 built-in handlers** — `HassTurnOn`, `HassTurnOff`, `HassLightSet`, `HassNevermind`, `HassCancelAll` (mirrors HA's classic intents)
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- **RufloRunner trait** — abstraction for delegating complex actions to Ruflo agents
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- **NoopRunner** — P1 stub; real `tokio::process` subprocess integration in P2
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- **AssistPipeline** — wires utterance → recognizer → handler → response
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Each component is trait-based so recognizers can be swapped (regex in P1, semantic embeddings in P2) without changing the pipeline.
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## Features
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- **Regex pattern recognition** — utterance matching via compiled regex (P1)
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- **5 built-in intents** — Turn On, Turn Off, Set Brightness, Nevermind, Cancel All
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- **Intent entities + slots** — recognized patterns capture entity names and parameters (e.g., "turn on light.kitchen" → entity: light.kitchen)
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- **Intent responses** — structured response with optional text, card (tile data), and conversation context
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- **Ruflo agent bridge** — submit complex intents to Ruflo agents for multi-step workflows (P2 subprocess)
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- **Trait-based recognizers** — pluggable: `RegexIntentRecognizer` (P1), `SemanticIntentRecognizer` (P2, ruvector embeddings)
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- **Trait-based handlers** — extensible: built-in HA-mirroring handlers + custom handlers
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- **No external STT/TTS** — this module handles NLU only; STT/TTS via homecore-api or external service
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## Capabilities
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| Capability | Type | Method | Notes |
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|------------|------|--------|-------|
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| Recognize intent | Recognizer | `RegexIntentRecognizer::recognize(utterance)` | Returns `Intent` enum or error |
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| Handle intent | Handler | `IntentHandler::handle(intent, context)` → service call | Execute service, set state, or defer to Ruflo |
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| Call Ruflo agent | Runner | `RufloRunner::run(intent, opts)` (P2) | Subprocess with JSON request/response |
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| Build response | Response | `IntentResponse::new(text, entities, card)` | Conversational response + optional card data |
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| Run pipeline | Pipeline | `AssistPipeline::process(utterance)` | Full utterance → recognizer → handler → response |
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## Comparison to Home Assistant
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| Aspect | Home Assistant | homecore-assist |
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|--------|----------------|-----------------|
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| Intent framework | HA Assist pipeline (Python) | Rust async trait-based pipeline |
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| Recognizer type | Regex (classic) + ML sentence transformer (2024+) | Regex (P1); semantic embeddings (P2) |
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| Built-in intents | `HassTurnOn`, `HassTurnOff`, `HassLight*`, etc. | 5 core intents mirroring HA classic |
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| Custom intents | YAML + Python script integration | Trait + handler registration |
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| Agent orchestration | N/A (HA has no agent framework) | RufloRunner + subprocess bridge (P2) |
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| STT/TTS | Via `conversation` integration + webhooks | Separate; HOMECORE-ASSIST handles NLU only |
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| Slot extraction | regex groups + sentence-transformers | Regex groups (P1); ruvector embeddings (P2) |
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| Response format | Text + TTS synthesis | Structured `IntentResponse` with card data |
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## Performance
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- **Intent recognition latency** — < 10 ms per utterance (regex compilation cached)
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- **Handler execution** — < 20 ms per intent (service call latency dominates)
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- **Ruflo agent subprocess** (P2) — ~500 ms per agent call (process spawn + IPC overhead)
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- **Memory overhead per intent** — ~500 bytes (Intent struct + handler state)
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- **Concurrent utterances** — 100+ per second on single machine (tokio task per utterance)
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- **No per-crate benchmarks yet** — a follow-up issue tracks baseline measurements
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## Usage
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Regex intent recognition (P1):
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```rust
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use homecore_assist::{RegexIntentRecognizer, IntentName, IntentRecognizer};
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#[tokio::main]
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async fn main() {
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let mut recognizer = RegexIntentRecognizer::new();
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// Register patterns
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recognizer.register(IntentName::HassTurnOn, r"turn (?:on|up) (?:the )?(\w+)").unwrap();
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// Recognize utterance
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let intent = recognizer.recognize("turn on the kitchen light").await.unwrap();
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println!("Intent: {:?}", intent.intent_name);
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println!("Entities: {:?}", intent.entities);
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}
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```
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Built-in handler (P1):
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```rust
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use homecore_assist::{HassTurnOn, IntentHandler, Intent, IntentResponse};
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use homecore::HomeCore;
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#[tokio::main]
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async fn main() {
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let homecore = HomeCore::new();
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let handler = HassTurnOn::new(homecore);
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let intent = Intent {
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intent_name: IntentName::HassTurnOn,
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entities: vec![("entity_id".to_string(), "light.kitchen".to_string())].into_iter().collect(),
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slots: Default::default(),
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..Default::default()
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};
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let response = handler.handle(&intent).await.unwrap();
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println!("Response: {}", response.text.unwrap_or_default());
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}
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```
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Full pipeline (P1):
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```rust
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use homecore_assist::AssistPipeline;
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use homecore::HomeCore;
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#[tokio::main]
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async fn main() {
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let homecore = HomeCore::new();
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let pipeline = AssistPipeline::new(homecore);
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let response = pipeline.process("turn on the kitchen light").await.unwrap();
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println!("Assistant: {}", response.text.unwrap_or_default());
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}
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```
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## Relation to other HOMECORE crates
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```
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homecore-assist (intent pipeline + Ruflo bridge)
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├─ homecore (state machine; handlers call services)
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├─ homecore-api (exposes intent endpoints via REST/WS, P2)
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├─ homecore-automation (complex intents can trigger automations)
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├─ homecore-server (registers AssistPipeline at startup)
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└─ ruflo (Ruflo agent subprocess for multi-step workflows, P2)
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```
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## References
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- [ADR-133: HOMECORE Assist — Voice/Intent + Ruflo Bridge](../../docs/adr/ADR-133-homecore-assist-ruflo.md)
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- [ADR-126: HOMECORE Home Assistant Port (master)](../../docs/adr/ADR-126-homecore-home-assistant-port.md)
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- [Home Assistant Assist Integration](https://www.home-assistant.io/blog/2024/03/04/introducing-home-assistants-local-voice-control/)
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- [Ruflo Documentation](https://github.com/ruvnet/claude-flow)
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- [README — wifi-densepose](../../../README.md)
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