Note

Migrate server source control and VCS Effect services to namespace imports and Effect.gen

• Removes separate *Shape interfaces across all source control and VCS services, inlining service shapes directly into Context.Service generic parameters.
• Converts all service factories from Effect.fn("name") to Effect.gen, and passes the resulting make effect directly to Layer.effect instead of invoking make().
• Switches imports to namespace style (e.g. import * as GitManager) and updates all type references from GitManagerShape to GitManager.GitManager["Service"] throughout production code and tests.
• VcsStatusBroadcaster.updateCachedStatus now publishes a unified 'snapshot' event containing both local and remote fields instead of separate events, which is a behavioral change for subscribers.

^{Macroscope summarized 8c8a3c9.}

Note

Low Risk
Mechanical refactor with tests passing; behavior should be unchanged aside from typing and layer wiring conventions.

Overview
This PR standardizes server git, VCS, and source-control modules on the same Effect service layout used elsewhere: inline Context.Service contracts, exported make as Effect.gen, and Layer.effect(Service, make) without calling make().

Service contracts: Standalone *Shape interfaces are removed; method types live on each Context.Service class and consumers/tests use SomeService["Service"] instead of *Shape.

Factories and wiring: makeGitManager, makeGitHubCli, and similar Effect.fn factories become make via Effect.gen. GitManager returns GitManager.of(...). Registry/provider code composes providers with yield* GitHubSourceControlProvider.make (the Effect value) rather than make().

Imports: Namespace imports (import * as GitVcsDriver) replace named service imports at boundaries; pure helpers use named imports (PR decode utilities, discovery helpers). ServerConfig moves to import * as ServerConfig with layerTest at the namespace root.

Tests: Mocks and helpers updated for the new types; no orchestration/MCP scope in this diff.

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