Read the rocket_mode INI key in PyRevitConfig and expose it via a new
RocketMode property, matching the existing LoadBeta/NewLoader pattern.

UIManagerService picks up the value at startup and on every BuildUI
(so a reload applies the change without restarting Revit) and skips the
parallel icon pre-load when rocket mode is active, reducing startup
latency in line with the IPY loader behaviour.

A unit test (TestRocketModeConfigFromIni) covers default, explicit
true/false, case-insensitive, and round-trip write/read cases.

https://claude.ai/code/session_013HpJtXCz4WQuSaNxY2gSxK

The C# loader never seeded the PYREVITEnvVarsDict AppDomain key, so all
pyrevit.sessioninfo / telemetry / logger APIs in scripts were crashing
with NullReferenceException when EnvDictionary() tried to cast null to
PythonDictionary.

Changes:
- EnvVariables.cs (Runtime): add static EnvDictionary.Seed() that
  accepts a plain Dictionary<string, object>, creates/gets the
  PythonDictionary internally, populates it, and stores it in AppDomain.
  Keeping PythonDictionary creation inside the Runtime avoids a
  compile-time IronPython reference in the loader (UseIronPython=false).

- PyRevitConfig.cs: add 12 missing config properties read from the same
  INI sections as PyRevitConsts in the CLI library:
  LoggingLevel (verbose/debug → 0/1/2), FileLogging, AutoUpdate,
  OutputStyleSheet [core]; TelemetryState, TelemetryUTCTimeStamps,
  TelemetryFilePath, TelemetryServerUrl, TelemetryIncludeHooks,
  AppTelemetryState, AppTelemetryServerUrl, AppTelemetryEventFlags
  [telemetry].

- EnvDictionarySeeder.cs (new): builds the values dict from PyRevitConfig
  and UIApplication, resolves pyRevit version from the version file and
  IronPython version from the engine DLL, then calls EnvDictionary.Seed()
  via reflection (same pattern as ScriptExecutor.Initialize/ExecuteScript).

- SessionManagerService.cs: call SeedEnvironmentDictionary() immediately
  after InitializeScriptExecutor() (which loads _runtimeAssembly) and
  before any extension startup script runs. Failure is logged as a
  warning rather than thrown to preserve graceful degradation.

- ScriptMetadataParsingTest.cs: add TestLoggingLevelConfigFromIni,
  TestTelemetryConfigFromIni, TestFileLoggingAndAutoUpdateConfigFromIni.

https://claude.ai/code/session_013HpJtXCz4WQuSaNxY2gSxK

… claude/loader-feature-comparison-lYDdu