feat(config): add config reload functionality and update server address field

This commit introduces a new module for configuration reloading and
updates the server configuration field from `bind-process` to
`address`. This change enhances the flexibility of the server
configuration and allows for dynamic updates without requiring a
restart.

BREAKING CHANGE: The configuration field `bind-process` has been
renamed to `address` and requires updates in existing configuration
files.

Author: roll-w

Cargo.lock

@@ -6,6 +6,7 @@ edition = "2024"
 [dependencies]
 axum = { version = "0.8.8", features = ["json", "macros"] }
 crossterm = "0.29.0"
+notify = "8.2.0"
 ratatui = { version = "0.30.0", default-features = false, features = ["crossterm"] }
 rmcp = { version = "1.2.0", features = ["server", "macros", "transport-streamable-http-server", "elicitation"] }
 russh = { version = "0.56.0", default-features = false, features = ["ring"] }

Cargo.toml

@@ -179,7 +179,7 @@ Key sections in `host-bridge.yaml`:
 
 Highlights:
 
-- `server.bind-process`: HTTP bind address
+- `server.address`: HTTP bind address (requires restart if changed at runtime)
 - `server.access.api-key-env`: optional environment-variable-backed API key for fixed `Authorization: Bearer <key>`
   request authentication
 - `logging.memory-buffer-lines`: hot in-memory log window for the TUI

README.md

@@ -4,7 +4,7 @@
 #   HOST_BRIDGE_CONFIG=/path/to/host-bridge.yaml
 
 server:
-  bind-process: 127.0.0.1:8787
+  address: 127.0.0.1:8787
   access:
   # Set api-key-env to require:
   # Authorization: Bearer <value from HOST_BRIDGE_API_KEY>