Fold navigation and services back into the runtime frontend

[ResurrectedTrader]

Folds the navigation and services libraries back into the runtime frontend.

Why

Both were split out so that a second frontend could link them instead of reimplementing them. That frontend isn't coming: main is plain V8 again (#49), and the unibind route keeps a single runtime frontend over either engine. Meanwhile:

• neither backend uses them;
• runtime is their only consumer;
• the tests compile the sources they need (Pathfinder.cpp, ProfileService.cpp) directly.

Keeping them separate cost two projects, their include-path, solution and glue entries, and a special include spelling for navigation.

Where things went

Each piece becomes a component under src/frontends/runtime/components/, beside console/, drawing/, gameloop/ and the rest:

Was	Now	Namespace
src/navigation/ (pathfinder, exit finder)	components/navigation/	d2bs::runtime::navigation
src/services/analytics/	components/analytics/	d2bs::runtime::analytics
src/services/characterstate/	components/characterstate/	d2bs::runtime::characterstate
src/services/dde/	components/dde/	d2bs::runtime::dde
src/services/profile/	components/profile/	d2bs::runtime::profile
src/services/update/	components/update/	d2bs::runtime::update

They aren't grouped under a services/ folder: Host starts and stops them like any other component, and a grouping folder would only add a namespace level.

Namespaces follow d2bs::<project>::<subdirectory>, as the other runtime components already do. Code inside d2bs::runtime names them bare (profile::Switch), and the bindings in d2bs::api write runtime::profile::Load. Bringing the rest of the tree into line with that scheme (d2bs::api, events and script types in bare d2bs, core, the backends) is the follow-up PR.

What else changes

• Projects: navigation.vcxproj and services.vcxproj are deleted, along with their solution, runtime and glue entries. The tests compile the moved sources from their new paths.
• Enum names: the moved enumerations' names are regenerated into RuntimeEnumNames. All 51 enumerations keep their names.
• Dependency rules: the two libraries' rules become directory rules in CLAUDE.md. navigation/ uses contract + utils only, and the service components never touch api/, V8 or the script engine. The compiler no longer enforces these, but the test build still compiles Pathfinder.cpp without V8 on its include path, which catches the rule that matters most.
• The namespace rule: a new "Namespaces" section in CLAUDE.md writes the scheme down: d2bs::<project>::<subdirectory>, with the contract (d2bs::game, d2bs::config) as the one exception. Grouping directories such as components/ don't appear, and a directory may split its code into purpose-named sub-namespaces.
• Docs: CLAUDE.md (tree, build targets, linking diagram, include paths, dependency rules), the README and four design docs are updated for the new paths. CLAUDE.md's tree now names components/engine/; it still said v8/.

Testing

• Builds: build.ps1 Release and Release -Platform x64 succeed.
• Tests: build.ps1 test passes 157/157.
• Lint: 125/125 files pass.
• Format: build.ps1 check-format is clean.
• Enum names: gen_enum_names.py --check is up to date.

🤖 Generated with Claude Code