Add PHP Analyzer Plugin and Composer Lock Data Handling

- Implemented the PhpAnalyzerPlugin to analyze PHP projects.
- Created ComposerLockData class to represent data from composer.lock files.
- Developed ComposerLockReader to load and parse composer.lock files asynchronously.
- Introduced ComposerPackage class to encapsulate package details.
- Added PhpPackage class to represent PHP packages with metadata and evidence.
- Implemented PhpPackageCollector to gather packages from ComposerLockData.
- Created PhpLanguageAnalyzer to perform analysis and emit results.
- Added capability signals for known PHP frameworks and CMS.
- Developed unit tests for the PHP language analyzer and its components.
- Included sample composer.lock and expected output for testing.
- Updated project files for the new PHP analyzer library and tests.

src/Findings/StellaOps.Findings.Ledger/migrations/006_orchestrator_airgap.sql

@@ -0,0 +1,51 @@
+-- 006_orchestrator_airgap.sql
+-- Add orchestrator export provenance and air-gap import provenance tables (LEDGER-34-101, LEDGER-AIRGAP-56-001)
+
+BEGIN;
+
+CREATE TABLE IF NOT EXISTS orchestrator_exports
+(
+    tenant_id     TEXT      NOT NULL,
+    run_id        UUID      NOT NULL,
+    job_type      TEXT      NOT NULL,
+    artifact_hash TEXT      NOT NULL,
+    policy_hash   TEXT      NOT NULL,
+    started_at    TIMESTAMPTZ NOT NULL,
+    completed_at  TIMESTAMPTZ,
+    status        TEXT      NOT NULL,
+    manifest_path TEXT,
+    logs_path     TEXT,
+    merkle_root   CHAR(64)  NOT NULL,
+    created_at    TIMESTAMPTZ NOT NULL,
+    PRIMARY KEY (tenant_id, run_id)
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS ix_orchestrator_exports_artifact_run
+    ON orchestrator_exports (tenant_id, artifact_hash, run_id);
+
+CREATE INDEX IF NOT EXISTS ix_orchestrator_exports_artifact
+    ON orchestrator_exports (tenant_id, artifact_hash);
+
+CREATE TABLE IF NOT EXISTS airgap_imports
+(
+    tenant_id        TEXT      NOT NULL,
+    bundle_id        TEXT      NOT NULL,
+    mirror_generation TEXT,
+    merkle_root      TEXT      NOT NULL,
+    time_anchor      TIMESTAMPTZ NOT NULL,
+    publisher        TEXT,
+    hash_algorithm   TEXT,
+    contents         JSONB,
+    imported_at      TIMESTAMPTZ NOT NULL,
+    import_operator  TEXT,
+    ledger_event_id  UUID,
+    PRIMARY KEY (tenant_id, bundle_id, time_anchor)
+);
+
+CREATE INDEX IF NOT EXISTS ix_airgap_imports_bundle
+    ON airgap_imports (tenant_id, bundle_id);
+
+CREATE INDEX IF NOT EXISTS ix_airgap_imports_event
+    ON airgap_imports (tenant_id, ledger_event_id);
+
+COMMIT;