Add sibling-container runtime manager and shell APIs

.env.example

@@ -1,7 +1,15 @@
 MISTRAL_API_KEY=replace-me
 OTTER_CORS_ALLOWED_ORIGINS=http://localhost:5173
 OTTER_DEFAULT_WORKSPACE_PATH=/workspaces
+OTTER_API_BASE_URL=http://otter-server:8080
 OTTER_VIBE_MODEL=mistral-large-3
 OTTER_VIBE_PROVIDER=mistral
 # Optional extra env forwarded to vibe process (comma-separated KEY=VALUE pairs)
 # OTTER_VIBE_EXTRA_ENV=KEY1=VALUE1,KEY2=VALUE2
+OTTER_RUNTIME_ENABLED=true
+OTTER_RUNTIME_DOCKER_SOCKET=unix:///var/run/docker.sock
+OTTER_RUNTIME_NETWORK=kymatics_default
+OTTER_RUNTIME_CONTAINER_PREFIX=otter-ws
+OTTER_RUNTIME_IMAGE_PREFIX=otter/workspace
+OTTER_RUNTIME_DEFAULT_HOST=http://localhost
+OTTER_RUNTIME_MAX_LOG_LINES=2000

Cargo.toml

@@ -11,14 +11,17 @@ license = "MIT"
 anyhow = "1"
 async-trait = "0.1"
 async-stream = "0.3"
-axum = { version = "0.8", features = ["multipart"] }
+axum = { version = "0.8", features = ["multipart", "ws"] }
+bollard = "0.20.1"
+bytes = "1"
 chrono = { version = "0.4", features = ["serde"] }
 dotenvy = "0.15"
 futures-util = "0.3"
 redis = { version = "0.32", features = ["tokio-comp"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 sqlx = { version = "0.8.1", default-features = false, features = ["runtime-tokio-rustls", "postgres", "uuid", "chrono", "json", "migrate", "derive"] }
+tar = "0.4"
 thiserror = "2"
 tokio = { version = "1", features = ["macros", "rt-multi-thread", "process", "fs", "signal", "time", "net", "sync"] }
 tower-http = { version = "0.6", features = ["cors", "trace"] }