Closes#34
## Summary
- Add `nav ssh-proxy` name mode (`--cluster`/`--name`) and `nav sandbox ssh-config` for VS Code Remote-SSH integration
- Fix VS Code Remote-SSH platform misdetection (was defaulting to Windows/PowerShell)
- Fix sandbox network policy for VS Code server connectivity
- Fix sandbox user shell configuration
## Problem
VS Code Remote-SSH was failing to connect to Navigator sandboxes due to three issues:
1. **Platform misdetection**: VS Code sends `uname -rsv` after a `ready:` marker and expects a response within ~1ms. Forced PTY allocation in `shell_request`, interactive bash (`-i`), and leaked supervisor env vars added enough latency that VS Code timed out and defaulted to "Platform: windows", then tried `powershell`.
2. **Broken network policy**: The `vscode` entry in `dev-sandbox-policy.yaml` was at the YAML top-level instead of nested under `network_policies:` (indentation bug). The VS Code server binary also needed a glob entry.
3. **No login shell**: The sandbox user had `/usr/sbin/nologin` as its shell.
## Changes
| File | Change |
|------|--------|
| `crates/navigator-sandbox/src/ssh.rs` | Remove forced PTY in `shell_request`, remove `-i` flag from pipe exec, add `env_clear()` + explicit `SHELL`/`PATH` to both shell spawn paths |
| `deploy/docker/sandbox/Dockerfile.base` | Change sandbox user shell to `/bin/bash`, set home to `/sandbox`, add `.bashrc`/`.profile` |
| `dev-sandbox-policy.yaml` | Fix `vscode:` indentation under `network_policies:`, add `/sandbox/.vscode-server/*` binary glob |
| `crates/navigator-cli/src/main.rs` | Add `--cluster`/`--name` to `SshProxy`, add `SshConfig`/`Policy`/`Logs` subcommands (rebase merge) |
| `crates/navigator-cli/src/ssh.rs` | Update `print_ssh_config` to use `--cluster` flag |
| `examples/vscode-remote-sandbox.md` | User-facing example and docs |
## How to use
```bash
# Create a persistent sandbox
nav sandbox create --keep my-sandbox
# Generate SSH config
nav sandbox ssh-config my-sandbox >> ~/.ssh/config
# Open VS Code
code --remote ssh-remote+nav-my-sandbox /sandbox
```
## Testing
- All 307 tests pass
- Clippy clean on modified crates
## Summary
- Track last deployed local changes and only redeploy new deltas in auto mode.
- Add per-component fingerprints (server/sandbox/helm) persisted to .cache/cluster-deploy-fast.state.
- Update docs for the new incremental deploy behavior.
```
mise run cluster
....
________________________________________________________
Executed in 75.21 secs fish external
usr time 578.03 millis 0.25 millis 577.78 millis
sys time 364.45 millis 1.22 millis 363.22 millis
```
with a change to `navigator-sandbox` (triggers rust recompile)
```
⟩ time mise run cluster:deploy
[cluster:deploy] $ build/scripts/cluster-deploy-fast.sh
Change detection took 0s
Fast deploy plan:
build server: 0
build sandbox: 1
helm upgrade: 1
...
________________________________________________________
Executed in 25.88 secs fish external
usr time 618.91 millis 0.24 millis 618.67 millis
sys time 557.71 millis 1.54 millis 556.18 millis
```
(most time is spent in docker build)
## Test Plan
- mise run pre-commit
## Summary
- Fix L7 REST relay response framing so chunked HTTP responses are parsed by chunk-size + trailer termination, instead of waiting for socket close semantics.
- Prevent ~30s stalls observed in `gh auth status` when talking to `api.github.com` through the sandbox proxy.
- Keep detailed debug timing around response framing/chunk completion to make future networking investigations easier.
## Additional changes in this branch
- Adds sandbox policy generation skill docs under `.agent/skills/generate-sandbox-policy/`.
- Includes related sandbox config/image updates in `dev-sandbox-policy.yaml` and `deploy/docker/sandbox/Dockerfile.base`.
## Test plan
- `cargo test -p navigator-sandbox l7::rest::tests:: -- --nocapture`
- `cargo test -p navigator-sandbox -- --nocapture`
- `mise run pre-commit`
- Manual: rebuilt `navigator-sandbox:dev`, ran `gh auth status` in sandbox, and confirmed the previous long proxy delay no longer reproduces.
Closes#67
## Summary
Implements transparent inference interception and routing for sandboxed AI agents. The sandbox proxy intercepts outbound AI SDK calls (OpenAI, Anthropic) and reroutes them through the gateway to policy-controlled backends — enabling organizations to redirect inference traffic to local or self-hosted models without modifying agent code.
**Decision model** — a tri-state OPA evaluation for every CONNECT request:
1. Binary + endpoint explicitly allowed in `network_policies` → **allow** (pass through)
2. Not explicitly allowed + `inference.allowed_routes` configured → **inspect for inference** (TLS intercept, detect API patterns, route through gateway)
3. Otherwise → **deny**
No endpoint declarations or binary lists needed for inference routing. Just configure `inference.allowed_routes`.
## Key Changes
### Sandbox (interception)
- **OPA policy**: New `network_action` Rego rule with three outcomes (`allow`, `inspect_for_inference`, `deny`). New `NetworkAction` enum replaces `PolicyDecision.allowed` bool for the proxy's main decision path.
- **Proxy**: New `InspectForInference` path — TLS-terminates client, parses HTTP, detects inference API patterns (`POST /v1/chat/completions`, `/v1/completions`, `/v1/messages`), strips auth headers, forwards via gRPC.
- **New module**: `l7/inference.rs` — `InferenceApiPattern`, `detect_inference_pattern()`, HTTP request/response parsing.
- **gRPC client**: New `proxy_inference()` for sandbox→gateway forwarding.
- **Sandbox init**: Creates OPA engine when inference is configured, even without `network_policies`.
### Gateway (dispatch)
- **InferenceService**: `ProxyInference` RPC loads sandbox policy, resolves allowed routes, dispatches to router. Full CRUD for inference routes.
- **Proto**: `InferenceRoute`, `InferenceRouteSpec`, `ProxyInferenceRequest/Response`, Inference gRPC service.
### Router (backend proxying)
- **New crate**: `navigator-router` with `Router`, `proxy_with_candidates()`, protocol-based route selection, backend HTTP proxying with auth header rewriting.
- **Mock support** for testing (`mock://` scheme).
### CLI
- `nav inference create/update/delete/list` commands for route management.
### Python SDK
- Updated protobuf bindings. Removed old `inference.py` client (replaced by transparent interception).
### Documentation
- New `architecture/inference-routing.md` — end-to-end system documentation.
- Updated `architecture/sandbox.md` — proxy, OPA, and source index sections.
- Updated `architecture/README.md` — new subsystem overview and diagram.
## Addendum: Chunked Transfer Compatibility
This branch now also fixes intercepted SDK requests that send chunked request bodies:
- `inspect_for_inference` now accepts `Transfer-Encoding: chunked` and decodes chunked request bodies before forwarding to the gateway
- Removed the prior `411 Length Required` response for chunked intercepted requests
- Added request/response header sanitization for framing and hop-by-hop headers (`content-length`, `transfer-encoding`, `connection`, etc.) to keep forwarded requests and returned responses valid
- Added unit tests for chunked parsing and header sanitization
Note: this improves compatibility for streaming-style SDK request patterns; true token-by-token passthrough response streaming is still a separate follow-up.
## Minimal Policy for Inference Routing
```yaml
inference:
allowed_routes:
- local
```
Any outgoing connection from a binary not explicitly allowed in `network_policies` will be intercepted and checked for inference API patterns.
## Test Plan
- [x] `cargo test --workspace` — all tests pass
- [x] `mise run pre-commit` — all checks pass
- [x] E2E: OpenAI chat completions routed through gateway
- [x] E2E: Anthropic messages routed through gateway
- [x] E2E: Python OpenAI SDK from sandbox (`examples/inference/inference.py`)
- [x] E2E test: `e2e/python/test_inference_routing.py`
Closes#44
## Summary
- Add `nav sandbox image push --dockerfile <path>` command to build and push custom container images into the cluster
- Fix sandbox Docker build failure caused by OpenClaw installer TTY access
- Fix sandbox proxy crash when network namespace is unavailable (fall back to loopback)
- Add e2e test for the full custom image build and sandbox creation flow
- Rename and rewrite BYOC architecture doc to reflect current state
## Changes
### `navigator-bootstrap`
- New `build` module (`src/build.rs`) with `build_and_push_image()` public API
- Builds via bollard `Docker::build_image()`, streams output to caller
- `.dockerignore` support with glob matching, 8 unit tests
### `navigator-cli`
- Added `SandboxImageCommands::Push` subcommand with `--dockerfile`, `--tag`, `--context`, `--build-arg` flags
- Added `test:e2e:custom-image` mise task
### `navigator-sandbox`
- Proxy now falls back to `127.0.0.1:3128` when no network namespace or explicit bind address is available, instead of erroring out
### Docker / Infra
- Sandbox Dockerfile: replaced OpenClaw native installer (`curl | bash`) with `npm install -g openclaw` to avoid `/dev/tty` failures in Docker build
### Documentation
- Renamed `architecture/sandbox-byoc.md` to `sandbox-custom-containers.md`
- Rewrote doc to describe current behavior (CLI usage, push pipeline, supervisor behavior, design decisions) instead of listing implementation changes
### Tests
- Added `e2e/bash/test_sandbox_custom_image.sh` covering image push + sandbox create with custom image
Drew Newberry