feat: add Java + C# parsers, improve skip messaging with extension breakdown

Adds JavaParser (classes, interfaces, enums, records, methods, @test
annotations, imports) and CSharpParser (classes, structs, interfaces,
enums, records, namespaces, methods, properties, [Test]/[Fact] attributes,
using directives, async detection).

Skip messaging now shows unsupported extension breakdown:
  "Unsupported: 1913 files [.xml(800), .txt(400), .md(300), ...]"
instead of just "skipped: 1913".

Supported languages: Python, Rust, TypeScript, JavaScript, Go, C++, Java, C#.
Bumps to v0.2.6.

Author: omoshola-o

Cargo.lock

@@ -9,7 +9,7 @@ members = [
 exclude = ["npm/wasm"]
 
 [workspace.package]
-version = "0.2.5"
+version = "0.2.6"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/agentralabs/agentic-codebase"
@@ -19,7 +19,7 @@ authors = ["Agentra Labs <contact@agentralabs.tech>"]
 [package]
 default-run = "acb"
 name = "agentic-codebase"
-version = "0.2.5"
+version = "0.2.6"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/agentralabs/agentic-codebase"
@@ -56,6 +56,8 @@ tree-sitter-typescript = "0.21"
 tree-sitter-javascript = "0.21"
 tree-sitter-go = "0.21"
 tree-sitter-cpp = "0.21"
+tree-sitter-java = "0.21"
+tree-sitter-c-sharp = "0.21"
 
 # Compression
 lz4_flex = "0.11"

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "agentic-codebase-cli"
-version = "0.2.5"
+version = "0.2.6"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/agentralabs/agentic-codebase"
@@ -15,6 +15,6 @@ name = "acb"
 path = "src/main.rs"
 
 [dependencies]
-agentic-codebase = { path = "../..", version = "0.2.5" }
+agentic-codebase = { path = "../..", version = "0.2.6" }
 clap = { version = "4", features = ["derive"] }
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }

crates/agentic-codebase-cli/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "agentic-codebase-ffi"
-version = "0.2.5"
+version = "0.2.6"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/agentralabs/agentic-codebase"
@@ -14,7 +14,7 @@ categories = ["api-bindings"]
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-agentic-codebase = { path = "../..", version = "0.2.5" }
+agentic-codebase = { path = "../..", version = "0.2.6" }
 pyo3 = { version = "0.20", features = ["extension-module"], optional = true }
 wasm-bindgen = { version = "0.2", optional = true }
 serde-wasm-bindgen = { version = "0.6", optional = true }

crates/agentic-codebase-ffi/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "agentic-codebase-mcp"
-version = "0.2.5"
+version = "0.2.6"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/agentralabs/agentic-codebase"
@@ -15,7 +15,7 @@ name = "agentic-codebase-mcp"
 path = "src/main.rs"
 
 [dependencies]
-agentic-codebase = { path = "../..", version = "0.2.5", features = ["stdio"] }
+agentic-codebase = { path = "../..", version = "0.2.6", features = ["stdio"] }
 clap = { version = "4", features = ["derive"] }
 sha2 = "0.10"
 walkdir = "2"

crates/agentic-codebase-mcp/Cargo.toml

@@ -1079,6 +1079,21 @@ fn cmd_compile(
                 cov.total_skipped(),
                 parse_result.stats.files_errored
             );
+            if cov.skipped_unknown_language > 0 && !cov.unsupported_extensions.is_empty() {
+                let mut exts: Vec<_> = cov.unsupported_extensions.iter().collect();
+                exts.sort_by(|a, b| b.1.cmp(a.1));
+                let top: Vec<_> = exts
+                    .iter()
+                    .take(8)
+                    .map(|(ext, count)| format!(".{}({})", ext, count))
+                    .collect();
+                eprintln!(
+                    "  {} Unsupported: {} files [{}]",
+                    s.info(),
+                    cov.skipped_unknown_language,
+                    top.join(", ")
+                );
+            }
             if !parse_result.errors.is_empty() {
                 eprintln!(
                     "  {} {} parse errors (use --verbose to see details)",
@@ -1162,6 +1177,7 @@ fn cmd_compile(
         "files_errored_total": parse_result.stats.files_errored,
         "skip_reasons": {
             "unknown_language": cov.skipped_unknown_language,
+            "unsupported_extensions": cov.unsupported_extensions,
             "language_filter": cov.skipped_language_filter,
             "exclude_pattern": cov.skipped_excluded_pattern,
             "too_large": cov.skipped_too_large,
@@ -1245,6 +1261,21 @@ fn cmd_compile(
                     cov.total_skipped(),
                     parse_result.stats.files_errored
                 );
+                if cov.skipped_unknown_language > 0 && !cov.unsupported_extensions.is_empty() {
+                    let mut exts: Vec<_> = cov.unsupported_extensions.iter().collect();
+                    exts.sort_by(|a, b| b.1.cmp(a.1));
+                    let top: Vec<_> = exts
+                        .iter()
+                        .take(8)
+                        .map(|(ext, count)| format!(".{}({})", ext, count))
+                        .collect();
+                    let _ = writeln!(
+                        out,
+                        "     Unsupported: {} files [{}]",
+                        cov.skipped_unknown_language,
+                        top.join(", ")
+                    );
+                }
                 if let Some(report_path) = coverage_report {
                     let _ = writeln!(
                         out,