Accept flat-spec input aliases across generators

Harden bizcase, bom, deck, and diagram generators to tolerate payload
shape variants (metadata/cover/summary/line_item aliases, current_state
as string, alternate pillar keys) so MCP and CLI flat specs render
consistently. Add input-alias tests per generator.

Also loosen KB governance tests to handle multi-document service YAMLs
with optional changelogs, untrack the customer demo output under
examples/output-demo-pharma-mx/ (matches .gitignore), and ship an
ADB-S vs Aurora 500GB sample deck.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/test_oci_diagram_gen_input_aliases.py

@@ -0,0 +1,76 @@
+import sys
+from pathlib import Path
+
+
+PROJECT_ROOT = Path(__file__).resolve().parent.parent
+TOOLS_DIR = PROJECT_ROOT / "tools"
+
+if str(TOOLS_DIR) not in sys.path:
+    sys.path.insert(0, str(TOOLS_DIR))
+
+from oci_diagram_gen import OCIDiagramGenerator
+
+
+def test_from_spec_accepts_name_aliases_and_generates_ids():
+    spec = {
+        "external": [{"name": "Users"}],
+        "clouds": [{"name": "AWS", "services": [{"name": "EC2 App", "service_type": "ec2"}]}],
+        "tenancy": {
+            "regions": [
+                {
+                    "name": "Ashburn",
+                    "vcns": [
+                        {
+                            "name": "App VCN",
+                            "subnets": [
+                                {"name": "App Subnet", "services": [{"name": "App VM"}]}
+                            ],
+                        }
+                    ],
+                }
+            ]
+        },
+        "on_prem": {"name": "Primary DC", "services": [{"name": "Legacy DB"}]},
+    }
+
+    gen = OCIDiagramGenerator.from_spec(spec)
+    values = [getattr(obj, "value", "") for obj in gen._objects.values()]
+
+    assert "Users" in values
+    assert "AWS" in values
+    assert "Ashburn" in values
+    assert "VCN App VCN" in values
+    assert "App Subnet" in values
+    assert "App VM" in values
+    assert "Primary DC" in values
+    assert "Legacy DB" in values
+
+
+def test_from_spec_accepts_source_target_and_omits_unresolved_connections():
+    spec = {
+        "external": [{"name": "Users"}],
+        "tenancy": {
+            "regions": [
+                {
+                    "name": "Ashburn",
+                    "vcns": [
+                        {
+                            "name": "App VCN",
+                            "subnets": [
+                                {"name": "App Subnet", "services": [{"name": "App VM"}]}
+                            ],
+                        }
+                    ],
+                }
+            ]
+        },
+        "connections": [
+            {"source": "Users", "target": "App VM", "type": "standard", "label": "HTTPS"},
+            {"from": "Users", "to": "App VM", "type": "standard", "label": "Duplicate"},
+            {"source": "Users", "target": "Missing VM", "type": "standard", "label": "Broken"},
+        ],
+    }
+
+    gen = OCIDiagramGenerator.from_spec(spec)
+
+    assert gen._connection_count == 1