//! CAPTURE-003: Recording Capture Demo
//! Sprint 76 - GREEN Phase
//!
//! Demonstrates the complete end-to-end workflow for capturing and replaying
//! debug sessions using PMAT's time-travel debugging features.
//!
//! ## Workflow Overview
//!
//! ```text
//! ┌─────────────────────────────────────────────────────────────┐
//! │ Step 1: Start DAP Server with Recording                     │
//! │ $ pmat debug serve --record-dir ./recordings                │
//! │                                                              │
//! │ Creates: ./recordings/ directory for .pmat files            │
//! └─────────────────────────────────────────────────────────────┘
//!                           │
//!                           ▼
//! ┌─────────────────────────────────────────────────────────────┐
//! │ Step 2: Connect Debugger (VSCode, etc.)                     │
//! │ - Connect to 127.0.0.1:5678                                 │
//! │ - Set breakpoints in your program                           │
//! │ - Run debug session                                          │
//! └─────────────────────────────────────────────────────────────┘
//!                           │
//!                           ▼
//! ┌─────────────────────────────────────────────────────────────┐
//! │ Step 3: Execution Captured Automatically                    │
//! │ - Each breakpoint hit → snapshot written                    │
//! │ - Each step command → snapshot written                      │
//! │ - Variables, stack frames, timestamps preserved             │
//! └─────────────────────────────────────────────────────────────┘
//!                           │
//!                           ▼
//! ┌─────────────────────────────────────────────────────────────┐
//! │ Step 4: Session Ends, Recording Finalized                   │
//! │ Creates: ./recordings/session-{timestamp}.pmat              │
//! │ Size: ~100KB - 10MB depending on session length             │
//! └─────────────────────────────────────────────────────────────┘
//!                           │
//!                           ▼
//! ┌─────────────────────────────────────────────────────────────┐
//! │ Step 5: Replay Recording                                     │
//! │ $ pmat debug replay ./recordings/session-1730000000.pmat    │
//! │                                                              │
//! │ Output:                                                      │
//! │ - Recording metadata (program, args, timestamp)             │
//! │ - Snapshot count and timeline                                │
//! │ - Variables and stack frames at each position               │
//! └─────────────────────────────────────────────────────────────┘
//! ```
//!
//! ## Quick Start
//!
//! ### Terminal 1: Start DAP Server
//! ```bash
//! # Create recordings directory
//! mkdir -p ./recordings
//!
//! # Start server with recording enabled
//! pmat debug serve --record-dir ./recordings
//!
//! # Output:
//! # 🔍 Starting DAP server...
//! #    Host: 127.0.0.1
//! #    Port: 5678
//! #    Recording: enabled
//! #    Record directory: ./recordings
//! #
//! # Connect your debugger to: 127.0.0.1:5678
//! ```
//!
//! ### Terminal 2 (later): Replay Session
//! ```bash
//! # List available recordings
//! ls -lh ./recordings/
//! # -rw-r--r-- 1 user user 2.3M Oct 30 10:30 session-1730296200.pmat
//!
//! # Replay the recording
//! pmat debug replay ./recordings/session-1730296200.pmat
//!
//! # Jump to specific position
//! pmat debug replay ./recordings/session-1730296200.pmat --position 10
//!
//! # Interactive mode
//! pmat debug replay ./recordings/session-1730296200.pmat --interactive
//! ```
//!
//! ## Architecture
//!
//! ### Recording Pipeline (Sprint 76)
//!
//! ```rust,no_run
//! # use std::sync::{Arc, Mutex};
//! # use std::fs::File;
//! # use pmat::services::dap::{DapServer, ExecutionRecorder};
//! #
//! // 1. DAP Server starts with recording directory
//! let mut server = DapServer::with_recording(Some("./recordings".into()));
//!
//! // 2. On debug session start, create recorder
//! let file = File::create("./recordings/session-1730296200.pmat").unwrap();
//! let dap_arc = Arc::new(Mutex::new(DapServer::new()));
//! let mut recorder = ExecutionRecorder::with_writer(
//!     file,
//!     "my_program".to_string(),
//!     vec!["--arg1".to_string()],
//!     dap_arc,
//! ).unwrap();
//!
//! recorder.start_recording();
//!
//! // 3. Capture snapshots during execution
//! // (Automatic on breakpoint hits and step commands)
//! recorder.capture_snapshot().unwrap();
//!
//! // 4. Finalize recording on session end
//! recorder.finalize().unwrap();
//! ```
//!
//! ### Replay Pipeline (Sprint 75)
//!
//! ```rust,no_run
//! # use pmat::services::dap::recording::Recording;
//! # use std::path::PathBuf;
//! #
//! // Load recording from .pmat file
//! let recording = Recording::load_from_file(
//!     &PathBuf::from("./recordings/session-1730296200.pmat")
//! ).unwrap();
//!
//! // Access metadata
//! let metadata = recording.metadata();
//! println!("Program: {}", metadata.program);
//! println!("Snapshots: {}", recording.snapshot_count());
//!
//! // Navigate timeline
//! for (i, snapshot) in recording.snapshots().iter().enumerate() {
//!     println!("Snapshot {}: {} variables", i, snapshot.variables.len());
//! }
//! ```
//!
//! ## File Format
//!
//! ### .pmat Recording Structure
//! ```text
//! [Magic Header: "PMAT"]
//! [Version: 0x01]
//! [Metadata: MessagePack]
//!   ├─ program: String
//!   ├─ args: Vec<String>
//!   ├─ timestamp: u64
//!   └─ environment: HashMap<String, String>
//! [Snapshot Count: u32]
//! [Snapshots: Vec<Snapshot>]
//!   ├─ frame_id: u64
//!   ├─ timestamp_relative_ms: u32
//!   ├─ variables: HashMap<String, serde_json::Value>
//!   ├─ stack_frames: Vec<StackFrame>
//!   ├─ instruction_pointer: u64
//!   └─ memory_snapshot: Option<Vec<u8>>
//! ```
//!
//! ### File Size Expectations
//! - **Small session** (10 snapshots): ~10-50 KB
//! - **Medium session** (100 snapshots): ~100-500 KB
//! - **Large session** (1000 snapshots): ~1-10 MB
//! - **Very large session** (10000 snapshots): ~10-100 MB
//!
//! ## Performance Characteristics
//!
//! ### Recording Overhead
//! - **Snapshot capture**: <1ms per snapshot (Sprint 76 target)
//! - **File write**: Streaming (no memory buffering)
//! - **Disk space**: ~1-10 KB per snapshot (depends on variable count)
//!
//! ### Replay Performance
//! - **Load time**: ~10-100ms for typical sessions
//! - **Memory usage**: Full recording loaded into RAM
//! - **Navigation**: O(1) random access to snapshots
//!
//! ## Integration Examples
//!
//! ### VSCode Debug Configuration
//!
//! Add to `.vscode/launch.json`:
//! ```json
//! {
//!   "version": "0.2.0",
//!   "configurations": [
//!     {
//!       "type": "pmat",
//!       "request": "launch",
//!       "name": "Debug with Recording",
//!       "program": "${workspaceFolder}/target/debug/my_program",
//!       "args": ["--flag", "value"],
//!       "recordDir": "${workspaceFolder}/recordings"
//!     }
//!   ]
//! }
//! ```
//!
//! ### Programmatic Recording
//!
//! ```rust,no_run
//! # use std::fs::File;
//! # use std::sync::{Arc, Mutex};
//! # use pmat::services::dap::{DapServer, ExecutionRecorder};
//! # use anyhow::Result;
//! #
//! fn create_debug_recording() -> Result<()> {
//!     // Create recording file
//!     let file = File::create("my_session.pmat")?;
//!
//!     // Initialize recorder with DAP server
//!     let dap = Arc::new(Mutex::new(DapServer::new()));
//!     let mut recorder = ExecutionRecorder::with_writer(
//!         file,
//!         "my_program".to_string(),
//!         vec!["arg1".to_string(), "arg2".to_string()],
//!         dap,
//!     )?;
//!
//!     // Add environment metadata
//!     recorder.add_environment("DAP_CLIENT", "VSCode");
//!     recorder.add_environment("DAP_CLIENT_VERSION", "1.75.0");
//!
//!     // Start recording
//!     recorder.start_recording();
//!
//!     // Capture snapshots during execution
//!     // (In real usage, this happens automatically on breakpoint hits)
//!     for i in 0..10 {
//!         recorder.capture_snapshot()?;
//!     }
//!
//!     // Finalize recording
//!     recorder.finalize()?;
//!
//!     Ok(())
//! }
//! ```
//!
//! ## Troubleshooting
//!
//! ### Recording Not Created
//! - Ensure `--record-dir` directory exists or is writable
//! - Check disk space (need ~1-10 MB per session)
//! - Verify debugger connected to DAP server
//!
//! ### Replay Fails
//! - Verify .pmat file is complete (not from interrupted session)
//! - Check file permissions (must be readable)
//! - Ensure file format version matches (V1 currently)
//!
//! ### Performance Issues
//! - Reduce snapshot frequency (only on breakpoints, not every step)
//! - Use `--position` to jump instead of loading full timeline
//! - Consider recording compression (planned for Sprint 78)
//!
//! ## See Also
//!
//! - **Sprint 75**: `REPLAY-003` recording format specification
//! - **Sprint 72**: `TRACE-005` ExecutionRecorder implementation
//! - **Sprint 71**: `DEBUG-002` DAP server infrastructure
//! - **Tests**: `server/tests/recording_workflow_e2e_tests.rs`

fn main() {
    println!("📚 PMAT Recording Capture Demo");
    println!();
    println!("This example is documentation-only.");
    println!("See the module documentation (above) for complete workflow examples.");
    println!();
    println!("Quick Start:");
    println!("  1. pmat debug serve --record-dir ./recordings");
    println!("  2. Connect debugger to 127.0.0.1:5678");
    println!("  3. Run debug session (snapshots captured automatically)");
    println!("  4. pmat debug replay ./recordings/session-{{timestamp}}.pmat");
    println!();
    println!("For more details:");
    println!("  cargo doc --open --package pmat");
}
