feature: support streaming file diffs

.github/workflows/rust.yml

@@ -111,7 +111,7 @@ jobs:
     - name: Conflict label formatting (Phase 1C)
       run: cargo test -p gitcomet-core --test conflict_label_formatting --verbose
     - name: Meld algorithm parity (Phase 5)
-      run: cargo test -p gitcomet-core --test meld_algorithm_tests --verbose
+      run: cargo test -p gitcomet-core --lib meld_tests --verbose
     - name: Core library unit tests
       run: cargo test -p gitcomet-core --lib --verbose
     - name: State management (conflict session, reducers, effects)
@@ -213,13 +213,13 @@ jobs:
       uses: Swatinem/rust-cache@v2
     - name: Benchmark conflict and markdown preview hot paths
       run: |
-        cargo bench -p gitcomet-ui-gpui --bench performance -- conflict_three_way_scroll/style_window
-        cargo bench -p gitcomet-ui-gpui --bench performance -- conflict_two_way_split_scroll/window_200
-        cargo bench -p gitcomet-ui-gpui --bench performance -- conflict_search_query_update/window/200
-        cargo bench -p gitcomet-ui-gpui --bench performance -- conflict_split_resize_step/window/200
-        cargo bench -p gitcomet-ui-gpui --bench performance -- markdown_preview_parse_build/single_document/medium
-        cargo bench -p gitcomet-ui-gpui --bench performance -- markdown_preview_parse_build/two_sided_diff/medium
-        cargo bench -p gitcomet-ui-gpui --bench performance -- markdown_preview_render_single/window_rows/200
-        cargo bench -p gitcomet-ui-gpui --bench performance -- markdown_preview_render_diff/window_rows/200
+        cargo bench -p gitcomet-ui-gpui --features benchmarks --bench performance -- conflict_three_way_scroll/style_window
+        cargo bench -p gitcomet-ui-gpui --features benchmarks --bench performance -- conflict_two_way_split_scroll/window_200
+        cargo bench -p gitcomet-ui-gpui --features benchmarks --bench performance -- conflict_search_query_update/window/200
+        cargo bench -p gitcomet-ui-gpui --features benchmarks --bench performance -- conflict_split_resize_step/window/200
+        cargo bench -p gitcomet-ui-gpui --features benchmarks --bench performance -- markdown_preview_parse_build/single_document/medium
+        cargo bench -p gitcomet-ui-gpui --features benchmarks --bench performance -- markdown_preview_parse_build/two_sided_diff/medium
+        cargo bench -p gitcomet-ui-gpui --features benchmarks --bench performance -- markdown_preview_render_single/window_rows/200
+        cargo bench -p gitcomet-ui-gpui --features benchmarks --bench performance -- markdown_preview_render_diff/window_rows/200
     - name: Emit budget report (alerting mode)
       run: cargo run -p gitcomet-ui-gpui --bin perf_budget_report -- --criterion-root target/criterion

Cargo.toml

@@ -34,13 +34,14 @@ gitcomet-git = { path = "crates/gitcomet-git" }
 gitcomet-git-gix = { path = "crates/gitcomet-git-gix" }
 gitcomet-state = { path = "crates/gitcomet-state" }
 gitcomet-ui = { path = "crates/gitcomet-ui" }
-gitcomet-ui-gpui = { path = "crates/gitcomet-ui-gpui" }
+gitcomet-ui-gpui = { path = "crates/gitcomet-ui-gpui", default-features = false }
 
 # External crates
 clap = { version = "4.6.0", features = ["derive"] }
 criterion = "0.8.2"
 gix = { version = "0.80.0", default-features = false, features = ["max-performance-safe", "comfort", "basic", "auto-chain-error", "status", "blame"] }
 gpui = { version = "0.2.2" }
+lru = "0.16"
 mimalloc = { version = "0.1.48", features = ["v3"] }
 pulldown-cmark = { version = "0.13", default-features = false, features = ["simd"] }
 notify = "9.0.0-rc.2"
@@ -51,23 +52,35 @@ semver = "1.0.27"
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.149"
 smol = "2.0.2"
+strsim = "0.11.1"
 tempfile = "3.27.0"
+thiserror = "2.0"
 tree-sitter = "0.26.7"
 tree-sitter-bash = "0.25.1"
 tree-sitter-css = "0.25.0"
 tree-sitter-go = "0.25.0"
 tree-sitter-html = "0.23.2"
+tree-sitter-javascript = "0.25.0"
 tree-sitter-json = "0.24.8"
 tree-sitter-python = "0.25.0"
 tree-sitter-rust = "0.24.0"
 tree-sitter-typescript = "0.23.2"
+tree-sitter-xml = "0.7.0"
 tree-sitter-yaml = "0.7.2"
 unicode-segmentation = "1.12.0"
 zed-reqwest = { version = "0.12.15-zed", default-features = false, features = ["blocking", "json", "rustls-tls-native-roots"] }
 
 [workspace.lints.rust]
 unsafe_code = "forbid"
 
+[profile.dev]
+incremental = true
+opt-level = 0
+
+[profile.test]
+opt-level = 1
+split-debuginfo = "packed"
+
 [profile.release]
 lto = "thin"
 codegen-units = 1

crates/gitcomet-app/Cargo.toml

@@ -13,7 +13,16 @@ workspace = true
 [features]
 default = ["ui-gpui", "gix"]
 ui = ["dep:gitcomet-ui"]
-ui-gpui = ["ui", "dep:gitcomet-ui-gpui"]
+ui-gpui-runtime = ["ui", "dep:gitcomet-ui-gpui"]
+ui-gpui = ["ui-gpui-runtime", "gitcomet-ui-gpui/syntax-all"]
+ui-gpui-syntax-common = [
+    "ui-gpui-runtime",
+    "gitcomet-ui-gpui/syntax-common",
+]
+ui-gpui-syntax-minimal = [
+    "ui-gpui-runtime",
+    "gitcomet-ui-gpui/syntax-minimal",
+]
 gix = ["dep:gitcomet-git-gix"]
 
 [dependencies]
@@ -24,6 +33,7 @@ gitcomet-git-gix = { workspace = true, optional = true }
 gitcomet-ui = { workspace = true, optional = true }
 gitcomet-ui-gpui = { workspace = true, optional = true }
 mimalloc = { workspace = true }
+rustc-hash = { workspace = true }
 tempfile = { workspace = true }
 
 [target.'cfg(target_os = "windows")'.build-dependencies]