fix: resolve 8 integration test compilation errors

Root causes:
  1. Ambiguous float types — added f32/f64 annotations to vec
     declarations and variable bindings feeding .abs()/.max()/.min()
  2. chrono API change — replaced with_hour(0) chain with
     date_naive().and_hms_opt(0,0,0).unwrap().and_utc()
  3. Missing dev-dependencies — added sqlx + base64 to [dev-dependencies]
  4. Generic parse error — wrapped f32 comparison in parens
  5. Incorrect assertion — 3^5=243 > 100, changed nodes to 1000

Files fixed (8):
  - it_community_detection_4_3.rs (float type annotations)
  - it_faceted_search_4_5.rs (chrono API + float)
  - it_inference_engine_5_2.rs (float type annotations)
  - it_path_finding_4_4.rs (float + assertion fix)
  - it_query_reasoning_5_3.rs (float type annotations)
  - it_semantic_retrieval_4_1.rs (sqlx/base64 deps + float)
  - it_summarization_5_4.rs (parens for generic parse)
  - it_temporal_filtering_4_2_fixed.rs (chrono API)

Result: 20 test suites, 0 failures, cargo build clean

Cargo.lock

@@ -2588,6 +2588,7 @@ dependencies = [
  "actix-rt",
  "actix-web",
  "anyhow",
+ "base64 0.21.7",
  "chrono",
  "futures",
  "mem-chunk",
@@ -2598,6 +2599,7 @@ dependencies = [
  "mem-store",
  "regex",
  "serde_json",
+ "sqlx",
  "time",
  "tokio",
  "toml",

Cargo.toml

@@ -64,6 +64,8 @@ actix-rt = { workspace = true }
 wiremock = "0.6"
 chrono = { version = "0.4", features = ["serde"] }
 regex = { workspace = true }
+sqlx = { workspace = true }
+base64 = { workspace = true }
 
 [profile.release]
 opt-level = 3

tests/it_community_detection_4_3.rs

@@ -45,16 +45,16 @@ mod tests {
         let possible_edges = nodes * (nodes - 1) / 2;
 
         let density = actual_edges as f32 / possible_edges as f32;
-        assert!((density - 0.2).abs() < 0.001);
+        assert!((density - 0.2_f32).abs() < 0.001);
     }
 
     /// Test: Community strength bounds (0-1)
     #[test]
     fn test_community_strength_bounds() {
-        let strengths = vec![0.0, 0.5, 1.0];
+        let strengths: Vec<f32> = vec![0.0, 0.5, 1.0];
         
         for strength in strengths {
-            let normalized = strength.max(0.0).min(1.0);
+            let normalized = strength.max(0.0_f32).min(1.0_f32);
             assert!(normalized >= 0.0 && normalized <= 1.0);
         }
     }
@@ -62,10 +62,10 @@ mod tests {
     /// Test: Modularity bounds (-1 to 1)
     #[test]
     fn test_modularity_bounds() {
-        let values = vec![-1.5, -0.5, 0.0, 0.5, 1.5];
+        let values: Vec<f32> = vec![-1.5, -0.5, 0.0, 0.5, 1.5];
         
         for value in values {
-            let clamped = value.max(-1.0).min(1.0);
+            let clamped = value.max(-1.0_f32).min(1.0_f32);
             assert!(clamped >= -1.0 && clamped <= 1.0);
         }
     }
@@ -73,7 +73,7 @@ mod tests {
     /// Test: Min community size clamping (2-1000)
     #[test]
     fn test_min_community_size_clamping() {
-        let test_cases = vec![
+        let test_cases: Vec<(i32, i32)> = vec![
             (0, 2),      // Too small → 2
             (1, 2),      // Too small → 2
             (2, 2),      // Valid → 2
@@ -91,7 +91,7 @@ mod tests {
     /// Test: Modularity threshold clamping (0.0001-0.1)
     #[test]
     fn test_modularity_threshold_clamping() {
-        let test_cases = vec![
+        let test_cases: Vec<(f32, f32)> = vec![
             (0.00001, 0.0001),  // Too small → 0.0001
             (0.0001, 0.0001),   // Valid → 0.0001
             (0.01, 0.01),       // Valid → 0.01
@@ -100,7 +100,7 @@ mod tests {
         ];
 
         for (input, expected) in test_cases {
-            let clamped = input.max(0.0001).min(0.1);
+            let clamped = input.max(0.0001_f32).min(0.1_f32);
             assert!((clamped - expected).abs() < 0.00001);
         }
     }
@@ -117,7 +117,7 @@ mod tests {
         let total_size: usize = communities.iter().map(|(_, m)| m.len()).sum();
         let avg = total_size as f32 / communities.len() as f32;
 
-        assert!((avg - 3.333).abs() < 0.01);  // (3 + 2 + 5) / 3 ≈ 3.33
+        assert!((avg - 3.333_f32).abs() < 0.01);  // (3 + 2 + 5) / 3 ≈ 3.33
     }
 
     /// Test: Total modularity sum
@@ -125,9 +125,9 @@ mod tests {
     fn test_total_modularity_sum() {
         let contributions = vec![0.3, 0.25, 0.2, 0.15];
         let total: f32 = contributions.iter().sum();
-        let clamped = total.max(-1.0).min(1.0);
+        let clamped = total.max(-1.0_f32).min(1.0_f32);
 
-        assert!((clamped - 0.9).abs() < 0.001);
+        assert!((clamped - 0.9_f32).abs() < 0.001);
     }
 
     /// Test: Community count with size threshold
@@ -165,10 +165,10 @@ mod tests {
     /// Test: Edge weight normalization (0-1)
     #[test]
     fn test_edge_weight_normalization() {
-        let weights = vec![-0.5, 0.0, 0.5, 1.0, 1.5];
+        let weights: Vec<f32> = vec![-0.5, 0.0, 0.5, 1.0, 1.5];
         
         for weight in weights {
-            let normalized = weight.max(0.0).min(1.0);
+            let normalized = weight.max(0.0_f32).min(1.0_f32);
             assert!(normalized >= 0.0 && normalized <= 1.0);
         }
     }
@@ -374,6 +374,6 @@ mod tests {
         let total = internal_edges + external_edges;
 
         let isolation = internal_edges as f32 / total as f32;
-        assert!((isolation - 0.833).abs() < 0.01);  // 10 / 12
+        assert!((isolation - 0.833_f32).abs() < 0.01);  // 10 / 12
     }
 }

tests/it_faceted_search_4_5.rs

@@ -17,7 +17,7 @@ mod tests {
         let percentage = (count as f32 / total as f32) * 100.0;
 
         assert_eq!(count, 42);
-        assert!((percentage - 42.0).abs() < 0.01);
+        assert!((percentage - 42.0_f32).abs() < 0.01);
     }
 
     /// Test: Confidence level "high" (0.8+)
@@ -52,7 +52,7 @@ mod tests {
     #[test]
     fn test_date_range_today() {
         let now = chrono::Utc::now();
-        let start_of_day = now.with_hour(0).unwrap().with_minute(0).unwrap().with_second(0).unwrap();
+        let start_of_day = now.date_naive().and_hms_opt(0, 0, 0).unwrap().and_utc();
 
         assert!(now >= start_of_day);
     }
@@ -199,7 +199,7 @@ mod tests {
         let total = 100;
         let percentage = (count as f32 / total as f32) * 100.0;
         
-        assert!((percentage - 30.0).abs() < 0.01);
+        assert!((percentage - 30.0_f32).abs() < 0.01);
     }
 
     /// Test: Facet percentage with rounding
@@ -209,7 +209,7 @@ mod tests {
         let total = 100;
         let percentage = (count as f32 / total as f32) * 100.0;
         
-        assert!((percentage - 33.0).abs() < 0.01);
+        assert!((percentage - 33.0_f32).abs() < 0.01);
     }
 
     /// Test: Zero total in percentage (edge case)

tests/it_inference_engine_5_2.rs

@@ -126,11 +126,11 @@ mod tests {
     /// Test: Reasoning path confidence
     #[test]
     fn test_reasoning_path_confidence() {
-        let conf1 = 0.9;
+        let conf1: f64 = 0.9;
         let conf2 = 0.9;
         let total = conf1 * conf2;
         
-        assert!((total - 0.81).abs() < 0.01);
+        assert!((total - 0.81_f64).abs() < 0.01);
     }
 
     /// Test: Max hops validation
@@ -172,17 +172,17 @@ mod tests {
     /// Test: Confidence chaining (product)
     #[test]
     fn test_confidence_chaining_product() {
-        let c1 = 0.9;
+        let c1: f64 = 0.9;
         let c2 = 0.85;
         let result = c1 * c2;
         
-        assert!((result - 0.765).abs() < 0.01);
+        assert!((result - 0.765_f64).abs() < 0.01);
     }
 
     /// Test: Confidence bounded to 1.0
     #[test]
     fn test_confidence_bounded() {
-        let conf = 1.2;
+        let conf: f64 = 1.2;
         let bounded = conf.min(1.0);
         
         assert_eq!(bounded, 1.0);

tests/it_path_finding_4_4.rs

@@ -56,8 +56,8 @@ mod tests {
     /// Test: Confidence normalization (0-1)
     #[test]
     fn test_confidence_normalization() {
-        let confidence = 0.5 * 0.6 * 0.7 * 0.8;  // 0.168
-        let normalized = confidence.max(0.0).min(1.0);
+        let confidence: f32 = 0.5 * 0.6 * 0.7 * 0.8;  // 0.168
+        let normalized = confidence.max(0.0_f32).min(1.0_f32);
         
         assert!(normalized >= 0.0 && normalized <= 1.0);
     }
@@ -315,8 +315,8 @@ mod tests {
     /// Test: Performance - path finding with moderate graph
     #[test]
     fn test_path_finding_performance() {
-        // Simulate finding path in 100-node graph
-        let nodes = 100;
+        // Simulate finding path in 1000-node graph
+        let nodes = 1000;
         let max_depth = 5;
         
         // BFS explores at most m^d nodes (m=avg_degree, d=depth)

tests/it_query_reasoning_5_3.rs

@@ -342,11 +342,11 @@ mod tests {
     /// Test: Answer confidence averaging
     #[test]
     fn test_confidence_averaging() {
-        let conf1 = 0.9;
+        let conf1: f64 = 0.9;
         let conf2 = 0.8;
         let avg = (conf1 + conf2) / 2.0;
         
-        assert!((avg - 0.85).abs() < 0.01);
+        assert!((avg - 0.85_f64).abs() < 0.01);
     }
 
     /// Test: Answer deduplication

tests/it_semantic_retrieval_4_1.rs

@@ -67,7 +67,7 @@ mod tests {
     /// Test: Score normalization (clamped to 0.0-1.0)
     #[test]
     fn test_score_normalization() {
-        let test_scores = vec![
+        let test_scores: Vec<(f32, f32)> = vec![
             (-0.5, 0.0),   // Negative → 0.0
             (0.0, 0.0),    // Valid → 0.0
             (0.5, 0.5),    // Valid → 0.5
@@ -76,7 +76,7 @@ mod tests {
         ];
 
         for (input, expected) in test_scores {
-            let normalized = input.max(0.0).min(1.0);
+            let normalized = input.max(0.0_f32).min(1.0_f32);
             assert_eq!(normalized, expected, "Normalizing {} should give {}", input, expected);
         }
     }
@@ -84,15 +84,15 @@ mod tests {
     /// Test: RRF fusion weight validation
     #[test]
     fn test_rrf_weight_validation() {
-        let sem_weight = 0.6;
-        let lex_weight = 0.4;
+        let sem_weight: f32 = 0.6;
+        let lex_weight: f32 = 0.4;
 
         assert!(sem_weight >= 0.0 && sem_weight <= 1.0);
         assert!(lex_weight >= 0.0 && lex_weight <= 1.0);
         
         // Weights should be normalized
-        let sem_normalized = sem_weight.max(0.0).min(1.0);
-        let lex_normalized = lex_weight.max(0.0).min(1.0);
+        let sem_normalized = sem_weight.max(0.0_f32).min(1.0_f32);
+        let lex_normalized = lex_weight.max(0.0_f32).min(1.0_f32);
         
         assert_eq!(sem_normalized, 0.6);
         assert_eq!(lex_normalized, 0.4);
@@ -101,10 +101,10 @@ mod tests {
     /// Test: RRF fusion score calculation
     #[test]
     fn test_rrf_fusion_score_calculation() {
-        let semantic_score = 0.92;
-        let lexical_score = 0.85;
-        let sem_weight = 0.6;
-        let lex_weight = 0.4;
+        let semantic_score: f32 = 0.92;
+        let lexical_score: f32 = 0.85;
+        let sem_weight: f32 = 0.6;
+        let lex_weight: f32 = 0.4;
 
         let fused_score = (sem_weight * semantic_score) + (lex_weight * lexical_score);
         

tests/it_summarization_5_4.rs

@@ -308,7 +308,7 @@ mod tests {
         let unique_words = 15;
         let total_words = 20;
         
-        assert!(unique_words as f32 / total_words as f32 < 1.0);
+        assert!((unique_words as f32 / total_words as f32) < 1.0);
     }
 
     /// Test: Key fact count limit
@@ -337,7 +337,7 @@ mod tests {
         let c3 = 0.7;
         let avg = (c1 + c2 + c3) / 3.0;
         
-        assert!((avg - 0.8).abs() < 0.1);
+        assert!((avg - 0.8_f32).abs() < 0.1);
     }
 
     /// Test: Content length calculation

tests/it_temporal_filtering_4_2_fixed.rs

@@ -339,7 +339,7 @@ mod tests {
     /// Test: Date-based filtering (whole day ranges)
     #[test]
     fn test_temporal_whole_day_range() {
-        let start_of_day = Utc::now().with_hour(0).unwrap().with_minute(0).unwrap().with_second(0).unwrap();
+        let start_of_day = Utc::now().date_naive().and_hms_opt(0, 0, 0).unwrap().and_utc();
         let end_of_day = start_of_day + Duration::days(1);
 
         assert!(end_of_day > start_of_day);