Add angreal task automation for dev workflows

Replace Makefile-based dev commands with angreal tasks while
keeping Make for compilation. Provides cleaner CLI experience:

- angreal build {extension|app|all} [--release]
- angreal test {unit|rust|python|bindings|functional|constraints|all}
- angreal perf {quick|standard|full} [--iterations N]
- angreal dev {clean|coverage|setup}

Shared utils.py module provides common helpers for project root
detection, make invocation, and extension build verification.

Author: Dylan Storey

.angreal/task_build.py

@@ -0,0 +1,178 @@
+"""Build commands for GraphQLite.
+
+Orchestrates compilation by delegating to Make for the actual build work.
+Make handles dependency tracking and compilation; angreal provides the dev UX.
+"""
+
+import angreal
+from utils import run_make
+
+build = angreal.command_group(name="build", about="Build GraphQLite components")
+
+
+@build()
+@angreal.command(
+    name="extension",
+    about="Build the SQLite extension",
+    tool=angreal.ToolDescription(
+        """
+Build the GraphQLite SQLite extension (.dylib on macOS, .so on Linux, .dll on Windows).
+
+## When to use
+- Before running tests that use the extension
+- Before deploying or distributing the extension
+- After making changes to C source files
+
+## Examples
+```
+angreal build extension           # Debug build
+angreal build extension --release # Optimized build
+```
+
+## Output
+Creates `build/graphqlite.dylib` (or platform equivalent)
+""",
+        risk_level="safe"
+    )
+)
+@angreal.argument(
+    name="release",
+    long="release",
+    short="r",
+    is_flag=True,
+    takes_value=False,
+    help="Build optimized release version (default: debug)"
+)
+@angreal.argument(
+    name="verbose",
+    long="verbose",
+    short="v",
+    is_flag=True,
+    takes_value=False,
+    help="Show build commands"
+)
+def build_extension(release: bool = False, verbose: bool = False) -> int:
+    """Build the SQLite extension."""
+    mode = "release" if release else "debug"
+    print(f"Building extension ({mode})...")
+
+    result = run_make("extension", release=release, verbose=verbose)
+
+    if result == 0:
+        print("Extension built successfully!")
+    else:
+        print("Build failed!")
+
+    return result
+
+
+@build()
+@angreal.command(
+    name="app",
+    about="Build the main gqlite application",
+    tool=angreal.ToolDescription(
+        """
+Build the main GraphQLite interactive application (gqlite).
+
+## When to use
+- When you need the standalone CLI tool
+- For interactive Cypher query testing
+
+## Examples
+```
+angreal build app           # Debug build
+angreal build app --release # Optimized build
+```
+
+## Output
+Creates `build/gqlite` executable
+""",
+        risk_level="safe"
+    )
+)
+@angreal.argument(
+    name="release",
+    long="release",
+    short="r",
+    is_flag=True,
+    takes_value=False,
+    help="Build optimized release version"
+)
+@angreal.argument(
+    name="verbose",
+    long="verbose",
+    short="v",
+    is_flag=True,
+    takes_value=False,
+    help="Show build commands"
+)
+def build_app(release: bool = False, verbose: bool = False) -> int:
+    """Build the main application."""
+    mode = "release" if release else "debug"
+    print(f"Building gqlite application ({mode})...")
+
+    result = run_make("graphqlite", release=release, verbose=verbose)
+
+    if result == 0:
+        print("Application built successfully!")
+    else:
+        print("Build failed!")
+
+    return result
+
+
+@build()
+@angreal.command(
+    name="all",
+    about="Build all components",
+    tool=angreal.ToolDescription(
+        """
+Build all GraphQLite components (extension and application).
+
+## When to use
+- Full project build
+- CI/CD pipelines
+- After fresh clone or major changes
+
+## Examples
+```
+angreal build all
+angreal build all --release
+```
+""",
+        risk_level="safe"
+    )
+)
+@angreal.argument(
+    name="release",
+    long="release",
+    short="r",
+    is_flag=True,
+    takes_value=False,
+    help="Build optimized release versions"
+)
+@angreal.argument(
+    name="verbose",
+    long="verbose",
+    short="v",
+    is_flag=True,
+    takes_value=False,
+    help="Show build commands"
+)
+def build_all(release: bool = False, verbose: bool = False) -> int:
+    """Build all components."""
+    mode = "release" if release else "debug"
+    print(f"Building all components ({mode})...")
+
+    result = run_make("extension", release=release, verbose=verbose)
+    if result != 0:
+        print("Extension build failed!")
+        return result
+
+    result = run_make("graphqlite", release=release, verbose=verbose)
+    if result != 0:
+        print("Application build failed!")
+        return result
+
+    print("All components built successfully!")
+    return 0