fix(docs): resolve Mermaid syntax error by using standard class assignments for GitHub markdown renderer

README.md

@@ -48,57 +48,66 @@ The active runtime deployment loads **148,854 in-memory FAISS vectors** across 3
 
 ```mermaid
 graph LR
-    %% Custom Styling Classes
-    classDef inputStyle fill:#1E293B,stroke:#38BDF8,stroke-width:2px,color:#F8FAFC;
-    classDef sttStyle fill:#0F172A,stroke:#818CF8,stroke-width:2px,color:#F8FAFC;
-    classDef guardStyle fill:#311B92,stroke:#B388FF,stroke-width:2px,color:#FFFFFF;
-    classDef cacheStyle fill:#064E3B,stroke:#34D399,stroke-width:2px,color:#F8FAFC;
-    classDef faissStyle fill:#164E63,stroke:#22D3EE,stroke-width:2px,color:#F8FAFC;
-    classDef synthStyle fill:#4C1D95,stroke:#C084FC,stroke-width:2px,color:#F8FAFC;
-    classDef outStyle fill:#065F46,stroke:#10B981,stroke-width:2px,color:#FFFFFF;
-    classDef blockStyle fill:#881337,stroke:#F43F5E,stroke-width:2px,color:#FFFFFF;
-
     subgraph PATH1 ["🎙️ Path 1: Audio & Text Ingestion"]
-        A[Audio Upload / Microphone Stream] ::: inputStyle --> STT[Sarvam Saaras STT + ffmpeg 16kHz] ::: sttStyle
-        T[Raw Text Input Bypass] ::: inputStyle --> ROUTER[Language Resolution Router] ::: sttStyle
+        A[Audio Upload / Microphone Stream] --> STT[Sarvam Saaras STT + ffmpeg 16kHz]
+        T[Raw Text Input Bypass] --> ROUTER[Language Resolution Router]
         STT --> ROUTER
     end
 
     subgraph PATH2 ["🛡️ Path 2: 4-Tier Security Shield"]
-        ROUTER --> G1[Tier-1 Stem Regex + Obfuscation Decoder] ::: guardStyle
-        G1 -- Safe --> G2[Tier-2 Meta Prompt-Guard 86M DPI] ::: guardStyle
-        G2 -- Safe --> G3[Tier-3 6-Class Query Intent Gate] ::: guardStyle
-        G3 -- Factual --> G4[Tier-4 Own-Lang Centroid Distance Gate] ::: guardStyle
+        ROUTER --> G1[Tier-1 Stem Regex + Obfuscation Decoder]
+        G1 -- Safe --> G2[Tier-2 Meta Prompt-Guard 86M DPI]
+        G2 -- Safe --> G3[Tier-3 6-Class Query Intent Gate]
+        G3 -- Factual --> G4[Tier-4 Own-Lang Centroid Distance Gate]
     end
 
     subgraph PATH3 ["⚡ Path 3: Sub-0.5ms Hot Cache Fast-Path"]
-        G4 -- On-Topic --> CACHE{Hot Cache Lookup} ::: cacheStyle
-        CACHE -- "Hit (<0.5ms)" --> FAST_OUT[Zero-Latency Response] ::: outStyle
+        G4 -- On-Topic --> CACHE{Hot Cache Lookup}
+        CACHE -- "Hit (<0.5ms)" --> FAST_OUT[Zero-Latency Response]
     end
 
     subgraph PATH4 ["🔎 Path 4: Hybrid Vector Retrieval Engine"]
-        CACHE -- "Miss" --> EMB[multilingual-e5-small INT8 ONNX] ::: faissStyle
-        EMB --> FAISS[Parallel FAISS HNSW Native & LongDoc Search] ::: faissStyle
-        FAISS --> RRF[Reciprocal Rank Fusion k=60] ::: faissStyle
-        RRF --> BM25[Adaptive Script-Aware BM25 Fusion] ::: faissStyle
-        BM25 --> GATE{Disqualification Gate} ::: faissStyle
+        CACHE -- "Miss" --> EMB[multilingual-e5-small INT8 ONNX]
+        EMB --> FAISS[Parallel FAISS HNSW Native & LongDoc Search]
+        FAISS --> RRF[Reciprocal Rank Fusion k=60]
+        RRF --> BM25[Adaptive Script-Aware BM25 Fusion]
+        BM25 --> GATE{Disqualification Gate}
     end
 
     subgraph PATH5 ["🧠 Path 5: Deterministic Synthesis & Grounding"]
-        GATE -- High Relevance --> IPI[Batched Prompt-Guard IPI Context Scan] ::: synthStyle
-        IPI -- Clean Chunks --> SYNTH[Continuous TextRank + SVD Energy Synthesis] ::: synthStyle
-        SYNTH --> GROUND[Post-Gen Grounding Overlap Verifier] ::: synthStyle
-        GROUND -- Grounded --> FINAL_OUT[JSON Response + 9-Stage Telemetry] ::: outStyle
+        GATE -- High Relevance --> IPI[Batched Prompt-Guard IPI Context Scan]
+        IPI -- Clean Chunks --> SYNTH[Continuous TextRank + SVD Energy Synthesis]
+        SYNTH --> GROUND[Post-Gen Grounding Overlap Verifier]
+        GROUND -- Grounded --> FINAL_OUT[JSON Response + 9-Stage Telemetry]
     end
 
     %% Rejection Routing
-    G1 -- Blocked --> REJECT[Declined Response: Safety Violation] ::: blockStyle
+    G1 -- Blocked --> REJECT[Declined Response: Safety Violation]
     G2 -- Injected --> REJECT
     G3 -- Non-Factual --> REJECT
     G4 -- Off-Topic --> REJECT
-    GATE -- Score < 0.35 --> DECLINE[Declined Response: Insufficient Info] ::: blockStyle
+    GATE -- Score < 0.35 --> DECLINE[Declined Response: Insufficient Info]
     IPI -- Poisoned --> REJECT
     GROUND -- Ungrounded --> DECLINE
+
+    %% Custom Styling Classes
+    classDef inputStyle fill:#1E293B,stroke:#38BDF8,stroke-width:2px,color:#F8FAFC;
+    classDef sttStyle fill:#0F172A,stroke:#818CF8,stroke-width:2px,color:#F8FAFC;
+    classDef guardStyle fill:#311B92,stroke:#B388FF,stroke-width:2px,color:#FFFFFF;
+    classDef cacheStyle fill:#064E3B,stroke:#34D399,stroke-width:2px,color:#F8FAFC;
+    classDef faissStyle fill:#164E63,stroke:#22D3EE,stroke-width:2px,color:#F8FAFC;
+    classDef synthStyle fill:#4C1D95,stroke:#C084FC,stroke-width:2px,color:#F8FAFC;
+    classDef outStyle fill:#065F46,stroke:#10B981,stroke-width:2px,color:#FFFFFF;
+    classDef blockStyle fill:#881337,stroke:#F43F5E,stroke-width:2px,color:#FFFFFF;
+
+    class A,T inputStyle;
+    class STT,ROUTER sttStyle;
+    class G1,G2,G3,G4 guardStyle;
+    class CACHE cacheStyle;
+    class EMB,FAISS,RRF,BM25,GATE faissStyle;
+    class IPI,SYNTH,GROUND synthStyle;
+    class FAST_OUT,FINAL_OUT outStyle;
+    class REJECT,DECLINE blockStyle;
 ```
 
 ### 🛣️ Swimlane Pipeline Execution Breakdown