diff --git a/gitnexus/src/core/ingestion/model/registration-table.ts b/gitnexus/src/core/ingestion/model/registration-table.ts
index a5bb14f21..8102926ba 100644
--- a/gitnexus/src/core/ingestion/model/registration-table.ts
+++ b/gitnexus/src/core/ingestion/model/registration-table.ts
@@ -182,6 +182,7 @@ const LABEL_BEHAVIOR = {
   Section: 'inert',
   Route: 'inert',
   Tool: 'inert',
+  StateSlot: 'inert',
 } as const satisfies Record<NodeLabel, LabelBehavior> &
   // Cross-invariant 1 — every class-like label (participates in
   // qualifiedName fallback in `SymbolTable.add()`) MUST be classified as
diff --git a/gitnexus/src/core/ingestion/pipeline-phases/state-slots.ts b/gitnexus/src/core/ingestion/pipeline-phases/state-slots.ts
new file mode 100644
index 000000000..06c6ff72d
--- /dev/null
+++ b/gitnexus/src/core/ingestion/pipeline-phases/state-slots.ts
@@ -0,0 +1,78 @@
+/**
+ * Phase: stateSlots
+ *
+ * Detects state slot patterns (React Query, SWR, Redux, Zustand, tRPC, etc.)
+ * across all source files and creates StateSlot nodes + PRODUCES/CONSUMES edges.
+ *
+ * @deps    crossFile
+ * @reads   scannedFiles (file paths + sizes), graph (symbol nodes for edge creation)
+ * @writes  graph (StateSlot nodes, PRODUCES edges, CONSUMES edges)
+ * @output  slotsCreated, producesEdges, consumesEdges, overlapWarnings
+ */
+
+import { readFile } from 'node:fs/promises';
+import type { PipelinePhase, PipelineContext, PhaseResult } from './types.js';
+import { getPhaseOutput } from './types.js';
+import type { StructureOutput } from './structure.js';
+import { detectStateSlots } from '../state-slot-detectors/index.js';
+import { processStateSlots, type StateSlotProcessorResult } from '../state-slot-processor.js';
+import { isDev } from '../utils/env.js';
+
+export interface StateSlotsOutput {
+  stateSlotsResult: StateSlotProcessorResult;
+}
+
+export const stateSlotsPhase: PipelinePhase<StateSlotsOutput> = {
+  name: 'stateSlots',
+  deps: ['crossFile'],
+
+  async execute(
+    ctx: PipelineContext,
+    deps: ReadonlyMap<string, PhaseResult<unknown>>,
+  ): Promise<StateSlotsOutput> {
+    const { scannedFiles, totalFiles } = getPhaseOutput<StructureOutput>(deps, 'structure');
+
+    ctx.onProgress({
+      phase: 'state-slots',
+      percent: 92,
+      message: 'Detecting state slots...',
+      stats: { filesProcessed: 0, totalFiles, nodesCreated: ctx.graph.nodeCount },
+    });
+
+    // Run detectors over all files
+    const allSlots = [];
+    let filesProcessed = 0;
+
+    for (const file of scannedFiles) {
+      let content: string;
+      try {
+        content = await readFile(file.path, 'utf8');
+      } catch {
+        continue;
+      }
+      const slots = detectStateSlots(content, file.path);
+      if (slots.length > 0) allSlots.push(...slots);
+      filesProcessed++;
+    }
+
+    ctx.onProgress({
+      phase: 'state-slots',
+      percent: 93,
+      message: `Processing ${allSlots.length} state slot(s)...`,
+      stats: { filesProcessed, totalFiles, nodesCreated: ctx.graph.nodeCount },
+    });
+
+    const stateSlotsResult = processStateSlots(allSlots, ctx.graph);
+
+    if (isDev) {
+      console.log(
+        `🗂  State slots: ${stateSlotsResult.slotsCreated} slots, ` +
+        `${stateSlotsResult.producesEdges} PRODUCES, ` +
+        `${stateSlotsResult.consumesEdges} CONSUMES, ` +
+        `${stateSlotsResult.overlapWarnings.length} overlap warnings`,
+      );
+    }
+
+    return { stateSlotsResult };
+  },
+};
diff --git a/gitnexus/test/unit/schema.test.ts b/gitnexus/test/unit/schema.test.ts
index 050ae954e..b15c800a3 100644
--- a/gitnexus/test/unit/schema.test.ts
+++ b/gitnexus/test/unit/schema.test.ts
@@ -68,8 +68,8 @@ describe('LadybugDB Schema', () => {
     });
 
     it('has expected total count', () => {
-      // 9 core + 18 multi-language + Route + Tool + StateSlot = 31
-      expect(NODE_TABLES).toHaveLength(31);
+      // 9 core + 18 multi-language + Route + Tool + StateSlot = 32
+      expect(NODE_TABLES).toHaveLength(32);
     });
   });
 
@@ -202,7 +202,7 @@ describe('LadybugDB Schema', () => {
 
   describe('schema query ordering', () => {
     it('NODE_SCHEMA_QUERIES has correct count', () => {
-      expect(NODE_SCHEMA_QUERIES).toHaveLength(31);
+      expect(NODE_SCHEMA_QUERIES).toHaveLength(32);
     });
 
     it('REL_SCHEMA_QUERIES has one relation table', () => {
@@ -210,8 +210,8 @@ describe('LadybugDB Schema', () => {
     });
 
     it('SCHEMA_QUERIES includes all node + rel + embedding schemas', () => {
-      // 31 node + 1 rel + 1 embedding = 33
-      expect(SCHEMA_QUERIES).toHaveLength(33);
+      // 32 node + 1 rel + 1 embedding = 34
+      expect(SCHEMA_QUERIES).toHaveLength(34);
     });
 
     it('node schemas come before relation schemas in SCHEMA_QUERIES', () => {
diff --git a/gitnexus/test/unit/tools.test.ts b/gitnexus/test/unit/tools.test.ts
index 4274716a7..618abc2c5 100644
--- a/gitnexus/test/unit/tools.test.ts
+++ b/gitnexus/test/unit/tools.test.ts
@@ -19,8 +19,8 @@ const GROUP_TOOLS = new Set([
 ]);
 
 describe('GITNEXUS_TOOLS', () => {
-  it('exports all tools (7 base + 3 route/tool/shape + 1 api_impact + 5 group)', () => {
-    expect(GITNEXUS_TOOLS).toHaveLength(16);
+  it('exports all tools (7 base + 3 route/tool/shape + 1 api_impact + 1 data_flow + 5 group)', () => {
+    expect(GITNEXUS_TOOLS).toHaveLength(17);
   });
 
   it('contains all expected tool names', () => {