diff --git a/config/portfolio-catalog.yaml b/config/portfolio-catalog.yaml
index 659dfc5..7003ca6 100644
--- a/config/portfolio-catalog.yaml
+++ b/config/portfolio-catalog.yaml
@@ -554,10 +554,18 @@ repos:
     tool_provenance: claude-code
   Signal & Noise:
     owner: d
+    purpose: public Signal & Noise portfolio surface
     lifecycle_state: active
-    review_cadence: weekly
+    criticality: medium
+    review_cadence: monthly
     intended_disposition: maintain
+    category: vanity
     tool_provenance: claude-code
+    maturity_program: maintain
+    target_maturity: operating
+    automation_eligible: false
+    aliases:
+      - signal-noise
   SpecCompanion:
     owner: d
     lifecycle_state: active
@@ -954,6 +962,32 @@ repos:
     target_maturity: functional
     automation_eligible: false
     notes: Active through the June 10-22, 2026 Fable window; staged harness/config changes are operator-installed only, then archive or park the campaign workspace after final index review.
+  fable-os-divergence:
+    owner: d
+    purpose: Fable campaign workspace for agent-OS divergence analysis and follow-up checklists
+    lifecycle_state: experimental
+    criticality: medium
+    review_cadence: ad-hoc
+    intended_disposition: experiment
+    category: infrastructure
+    tool_provenance: claude-ai
+    maturity_program: experiment
+    target_maturity: functional
+    automation_eligible: false
+    notes: Campaign evidence and next-step planning workspace; keep out of default portfolio attention unless a publish/park/archive decision is active.
+  fable-site-rebuild:
+    owner: d
+    purpose: control room for rebuilding the public portfolio site around the Fable site-rebuild campaign
+    lifecycle_state: experimental
+    criticality: medium
+    review_cadence: ad-hoc
+    intended_disposition: experiment
+    category: infrastructure
+    tool_provenance: claude-ai
+    maturity_program: experiment
+    target_maturity: functional
+    automation_eligible: false
+    notes: Not a product repo; the product surface is portfolio-index. Keep this workspace out of default attention except when the site-rebuild campaign is actively being dispatched.
   portfolio-index:
     owner: d
     purpose: public-safe static portfolio index for hiring-manager review
@@ -1297,4 +1331,4 @@ repos:
     owner: d
     lifecycle_state: archived
     review_cadence: quarterly
-    intended_disposition: archive
+    intended_disposition: archive
\ No newline at end of file
diff --git a/src/portfolio_catalog.py b/src/portfolio_catalog.py
index 53cfdfc..3ddf2a8 100644
--- a/src/portfolio_catalog.py
+++ b/src/portfolio_catalog.py
@@ -293,6 +293,10 @@ def _normalize_repo_entries(
             "matched_by": "full-name" if "/" in key else "bare-name",
             "has_explicit_entry": True,
         }
+        aliases = raw_value.get("aliases") or []
+        if aliases and not isinstance(aliases, list):
+            errors.append(f"Portfolio catalog entry '{key}' aliases must be a list.")
+            aliases = []
         for field_name, allowed in (
             ("lifecycle_state", VALID_LIFECYCLE_STATES),
             ("criticality", VALID_CRITICALITY),
@@ -316,6 +320,17 @@ def _normalize_repo_entries(
             seen_bare_names.add(bare_key)
 
         normalized_entries[_normalize_key(key)] = normalized
+        for raw_alias in aliases:
+            alias = _safe_text(raw_alias)
+            if not alias:
+                continue
+            normalized_alias = _normalize_key(alias)
+            if normalized_alias in normalized_entries:
+                warnings.append(
+                    f"Portfolio catalog alias '{alias}' for '{key}' duplicates an existing repo key."
+                )
+                continue
+            normalized_entries[normalized_alias] = normalized
 
     return normalized_entries
 
@@ -601,4 +616,4 @@ def build_intent_alignment_summary(audits: list[Any]) -> dict[str, Any]:
     return {
         "counts": dict(counts),
         "summary": summary,
-    }
+    }
\ No newline at end of file
diff --git a/tests/test_portfolio_catalog.py b/tests/test_portfolio_catalog.py
index f6b3554..376f9e6 100644
--- a/tests/test_portfolio_catalog.py
+++ b/tests/test_portfolio_catalog.py
@@ -62,6 +62,38 @@ def test_load_portfolio_catalog_accepts_defaults_and_repo_entries(tmp_path: Path
     assert catalog["repos"]["repob"]["doctor_standard"] == ""
 
 
+def test_load_portfolio_catalog_indexes_repo_aliases(tmp_path: Path):
+    path = tmp_path / "portfolio-catalog.yaml"
+    path.write_text(
+        """
+repos:
+  Signal & Noise:
+    owner: d
+    purpose: public portfolio surface
+    lifecycle_state: active
+    criticality: medium
+    review_cadence: monthly
+    intended_disposition: maintain
+    category: vanity
+    aliases:
+      - signal-noise
+""",
+        encoding="utf-8",
+    )
+
+    catalog = load_portfolio_catalog(path)
+    entry = catalog_entry_for_repo(
+        {"name": "signal-noise", "full_name": "saagpatel/signal-noise", "path": "signal-noise"},
+        catalog,
+    )
+
+    assert catalog["errors"] == []
+    assert entry["has_explicit_entry"] is True
+    assert entry["catalog_key"] == "Signal & Noise"
+    assert entry["owner"] == "d"
+    assert entry["matched_by"] == "path"
+
+
 def test_load_portfolio_catalog_normalizes_doctor_standard(tmp_path: Path):
     path = tmp_path / "portfolio-catalog.yaml"
     path.write_text(
@@ -356,4 +388,4 @@ def test_catalog_line_and_summaries_cover_missing_contracts():
     assert catalog_summary["cataloged_repo_count"] == 1
     assert catalog_summary["missing_contract_count"] == 1
     assert alignment_summary["counts"]["aligned"] == 1
-    assert alignment_summary["counts"]["missing-contract"] == 1
+    assert alignment_summary["counts"]["missing-contract"] == 1
\ No newline at end of file