docs: update README for GitHub Copilot CLI support

- tagline now mentions Copilot CLI
- install section lists Copilot CLI activation step
- benchmarks table updated to 10/10 with Copilot session fixture
- config section shows both claude and copilot paths
- new GitHub Copilot CLI section (hooks, memory injection, escape hatch)
- How it works updated to cover Copilot CLI hook architecture
- local dev section simplified (bench/run.sh now auto-detects binary)

Author: claudioemmanuel

README.md

@@ -4,7 +4,7 @@
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
 [![Rust](https://img.shields.io/badge/rust-stable-orange.svg)](https://www.rust-lang.org)
 
-Token compression + context optimization for Claude Code and OpenCode. Runs automatically in Claude Code. Manual usage in OpenCode.
+Token compression + context optimization for Claude Code, OpenCode, and GitHub Copilot CLI. Runs automatically in Claude Code and Copilot CLI. Manual usage in OpenCode.
 
 ## What it does
 
@@ -21,6 +21,7 @@ curl -fsSL https://raw.githubusercontent.com/claudioemmanuel/squeez/main/install
 
 - **Claude Code:** Restart Claude Code to activate
 - **OpenCode:** Restart OpenCode to activate the plugin
+- **Copilot CLI:** Memory injected into `~/.copilot/copilot-instructions.md`; restart Copilot CLI to activate hook-based bash compression
 
 ## Benchmarks
 
@@ -30,15 +31,16 @@ Measured on macOS (Apple Silicon), token estimate = chars/4. Run with `bash benc
 |---------|--------|-------|-----------|---------|
 | `ps aux` | 40,373 tk | 2,352 tk | **-95%** | 6ms |
 | `git log` (200 commits) | 2,667 tk | 819 tk | **-70%** | 4ms |
+| `docker logs` | 665 tk | 186 tk | **-73%** | 5ms |
 | `find` (deep tree) | 424 tk | 134 tk | **-69%** | 3ms |
 | `git status` | 50 tk | 16 tk | **-68%** | 3ms |
-| `docker logs` | 665 tk | 186 tk | **-73%** | 5ms |
-| `npm install` | 524 tk | 231 tk | **-56%** | 3ms |
 | `ls -la` | 1,782 tk | 886 tk | **-51%** | 4ms |
+| `npm install` | 524 tk | 231 tk | **-56%** | 3ms |
 | `git diff` | 502 tk | 317 tk | **-37%** | 4ms |
 | `env` dump | 441 tk | 287 tk | **-35%** | 3ms |
+| Copilot CLI session | 639 tk | 421 tk | **-35%** | 3ms |
 
-9/9 fixtures pass. Latency under 10ms on every fixture.
+10/10 fixtures pass. Latency under 10ms on every fixture.
 
 ## Escape hatch
 
@@ -48,7 +50,9 @@ Measured on macOS (Apple Silicon), token estimate = chars/4. Run with `bash benc
 
 ## Configuration
 
-Optional `~/.claude/squeez/config.ini` (all fields optional):
+Optional config file (all fields optional):
+- Claude Code / default: `~/.claude/squeez/config.ini`
+- Copilot CLI: `~/.copilot/squeez/config.ini`
 ```ini
 # Compression
 max_lines = 200
@@ -64,11 +68,13 @@ memory_retention_days = 30          # how long to keep session summaries
 
 ## How it works
 
-Three Claude Code hooks work together:
+### Claude Code & Copilot CLI
+
+Three hooks work together:
 
 **Compression** (`PreToolUse`): Every Bash call is rewritten — `git status` → `squeez wrap git status`. The wrap command runs via `sh -c`, captures stdout+stderr, applies 4 strategies (smart_filter → dedup → grouping → truncation), and prints a compressed result with a savings header.
 
-**Session memory** (`SessionStart`): On each new session, `squeez init` finalizes the previous session into a summary (files touched, errors resolved, test results, git events) and prints a memory banner so Claude has prior-session context from the start.
+**Session memory** (`SessionStart`): On each new session, `squeez init` finalizes the previous session into a summary (files touched, errors resolved, test results, git events) and prints a memory banner so the agent has prior-session context from the start. For Copilot CLI, this banner is also written to `~/.copilot/copilot-instructions.md` which is loaded automatically at every session.
 
 **Token tracking** (`PostToolUse`): Every tool call's output size is tracked. When cumulative session tokens cross 80% of the context budget, a compact warning is emitted in the next bash output header.
 
@@ -98,6 +104,30 @@ squeez wrap docker logs mycontainer
 squeez wrap npm install
 ```
 
+## GitHub Copilot CLI
+
+Copilot CLI is supported via hooks registered in `~/.copilot/settings.json` and session memory injected into `~/.copilot/copilot-instructions.md`.
+
+**Install:**
+```bash
+curl -fsSL https://raw.githubusercontent.com/claudioemmanuel/squeez/main/install.sh | sh
+```
+
+**What happens:**
+- Session memory is written to `~/.copilot/copilot-instructions.md` — Copilot CLI reads this automatically at every session start, giving the agent prior-session context without re-discovery tokens
+- Hooks are registered in `~/.copilot/settings.json` for PreToolUse (bash compression), SessionStart (memory refresh), and PostToolUse (token tracking)
+- Session state is stored separately in `~/.copilot/squeez/` (independent from Claude Code state)
+
+**Refresh memory manually:**
+```bash
+SQUEEZ_DIR=~/.copilot/squeez ~/.claude/squeez/bin/squeez init --copilot
+```
+
+**Escape hatch:**
+```bash
+--no-squeez git log --all --graph
+```
+
 ## Local development
 
 **Prerequisites:** Rust stable (`rustup update stable`), `bash`, macOS or Linux.
@@ -110,16 +140,14 @@ cd squeez
 # 2. Build & test
 cargo test
 
-# 3. Run benchmarks (requires release binary)
+# 3. Run benchmarks (uses local release binary automatically)
 cargo build --release
-mkdir -p "$HOME/.claude/squeez/bin"
-cp target/release/squeez "$HOME/.claude/squeez/bin/squeez"
 bash bench/run.sh
 
-# 4. Install hooks into your Claude Code config
+# 4. Install hooks into Claude Code and Copilot CLI config
 bash install.sh
 
-# 5. Restart Claude Code — squeez is active
+# 5. Restart Claude Code / Copilot CLI — squeez is active
 ```
 
 To uninstall: `bash uninstall.sh`