Add Doctor console command adapter

[josiahking]

Summary

Adds a runtime-neutral doctor command adapter that connects the existing Doctor diagnostics to Core's console command abstraction.

Changes

• adds DoctorCommand backed by an injected DoctorRunner
• renders PASS, WARNING, and FAIL findings in deterministic report order
• emits remediation immediately after its finding when available
• returns exit code 0 for successful reports, 1 for diagnostic failures, and 2 for unsupported arguments
• keeps diagnostic failures on normal command output rather than the error channel
• preserves programming and malformed-definition failures as throwables
• documents the console adapter and its current limitations
• updates the Core source inventory and adds focused command coverage

Validation

• 548 tests / 2064 assertions
• architecture suite: 63 tests / 5575 assertions
• documentation suite: 130 tests / 2124 assertions
• dependency analysis: 0 violations
• PHP CS Fixer: 186 files checked, 0 fixable
• release package validation passed
• package split validation passed
• prerelease consumer validation passed
• security audit and licence policy passed

Package split

Core:
e0eb08cf23fa393050210954cbd050963d582f95

Scope

4 files changed, 380 insertions.

No shell executable, argv parser, JSON output, Composer probing, environment inspection, route inspection, writable-path inspection, dependency changes, or package-manifest changes are included.