refactor(app): lazy network contexts, unified network switch, MCP network tools

.env.example

@@ -27,7 +27,7 @@ DEVNET_core_zmq_endpoint=tcp://127.0.0.1:23710
 # See docs/local-network.md for detailed setup instructions.
 LOCAL_dapi_addresses=http://127.0.0.1:2443,http://127.0.0.1:2543,http://127.0.0.1:2643
 LOCAL_core_host=127.0.0.1
-LOCAL_core_rpc_port=20302
+LOCAL_core_rpc_port=19898
 LOCAL_core_rpc_user=dashmate
 # Use dashmate cli to retrive it: 
 # dashmate config get core.rpc.users.dashmate.password --config=local_seed

CLAUDE.md

@@ -109,13 +109,13 @@ User-facing error messages (shown in `MessageBanner` via `Display`) must follow
 - **CLI ≠ MCP**: `src/bin/det_cli/` is a separate client that talks to the MCP server — it must work over HTTP too, not just in-process. Never put tool logic in the CLI binary; tools live in `src/mcp/tools/` and the CLI discovers them dynamically via `tools/list`.
 - **Tool architecture**: each tool is a struct implementing `ToolBase` (metadata) + `AsyncTool<DashMcpService>` (invocation). Adding a tool requires only the struct + registering in `tool_router()` — zero CLI changes.
 - **Tool naming**: `{domain}_{object}_{action}` — e.g. `core_address_create`, `platform_withdrawals_get`, `tool_describe`. CLI converts underscores to hyphens.
-- **Context provider**: `ContextProvider::Shared(ArcSwap)` for HTTP mode (follows GUI network switches), `ContextProvider::Lazy(OnceCell)` for stdio (init on first tool call).
+- **Context provider**: `ContextHolder::Shared(ArcSwap)` for HTTP mode (follows GUI network switches), `ContextHolder::Standalone(ArcSwapOption)` for stdio (init on first tool call).
 - **Network safety**: tools accept optional `network` param — request fails if it doesn't match the active network. Exempt: `network_info`, `tool_describe`.
 - **SPV sync**: wallet tools call `resolve::ensure_spv_synced()` before operating — polls SPV status with 1s interval, 10min timeout.
 - **Backend dispatch**: tools reuse the app's `BackendTask` system via `dispatch::dispatch_task()` — creates a throwaway channel, calls `app_context.run_backend_task()`.
 - **Schema quirk**: `schemars` v1 derives bare `true` for `serde_json::Value` fields — some MCP clients reject this. Use `#[schemars(transform)]` to override.
 - **Error type**: `McpToolError` enum (InvalidParam, WalletNotFound, SpvSyncFailed, TaskFailed, Internal) converts to `rmcp::ErrorData` via `From`.
-- **Docs**: `docs/MCP.md` (server config, tool reference), `docs/CLI.md` (usage, examples), `docs/EXPOSING_BACKEND_TASKS.md` (checklist for adding new MCP tools).
+- **Docs**: `docs/MCP.md` (server config, tool reference), `docs/CLI.md` (usage, examples), `docs/MCP_TOOL_DEVELOPMENT.md` (checklist for adding new MCP tools).
 
 ### Key Dependencies
 

CONTRIBUTING.md

@@ -76,7 +76,7 @@ The default `cargo build` produces only the `dash-evo-tool` GUI binary. Optional
 
 ### Adding MCP tools
 
-To expose a `BackendTask` as a new MCP/CLI tool, follow the step-by-step checklist in [docs/EXPOSING_BACKEND_TASKS.md](docs/EXPOSING_BACKEND_TASKS.md). It covers architecture rules, the standard invocation pattern, registration, and common pitfalls.
+To expose a `BackendTask` as a new MCP/CLI tool, follow the step-by-step checklist in [docs/MCP_TOOL_DEVELOPMENT.md](docs/MCP_TOOL_DEVELOPMENT.md). It covers architecture rules, the standard invocation pattern, registration, and common pitfalls.
 
 ## Code quality
 

Cargo.toml

@@ -18,7 +18,7 @@ qrcode = "0.14.1"
 nix = { version = "0.31.1", features = ["signal"] }
 eframe = { version = "0.33.3", features = ["persistence", "wgpu"] }
 base64 = "0.22.1"
-dash-sdk = { git = "https://github.com/dashpay/platform", rev = "a10190399d7033e7e56e3f756411e9a5dab87829", features = [
+dash-sdk = { git = "https://github.com/dashpay/platform", rev = "94cefb30d9d8ad84b1d45e0a152341a2425f920b", features = [
     "core_key_wallet",
     "core_key_wallet_manager",
     "core_bincode",
@@ -28,7 +28,7 @@ dash-sdk = { git = "https://github.com/dashpay/platform", rev = "a10190399d7033e
     "core_spv",
     "shielded",
 ] }
-rs-sdk-trusted-context-provider = { git = "https://github.com/dashpay/platform", rev = "a10190399d7033e7e56e3f756411e9a5dab87829" }
+rs-sdk-trusted-context-provider = { git = "https://github.com/dashpay/platform", rev = "94cefb30d9d8ad84b1d45e0a152341a2425f920b" }
 zip32 = "0.2.0"
 grovestark = { git = "https://www.github.com/dashpay/grovestark", rev = "5b9e289cca54c79b1305d5f4f40bf1148f1eb0e3" }
 rayon = "1.8"