chore: rename packages/ to crates/

Move all 29 workspace members from packages/<name>/ to crates/<name>/.
Updates: workspace Cargo.toml (members + path deps), justfile, root
CLAUDE.md, scripts/build/CARGO_INSTALL.md, docs/architecture/crates.md
(renamed from packages.md), structural references in docs/architecture
and docs/configuration, per-crate CLAUDE.md self-references. Historical
plans, reports, and building/ docs are left untouched.

No behavior change; just check-all stays green and fermata tests pass.

Cargo.toml

@@ -0,0 +1,73 @@
+[package]
+name = "dirigate"
+version = "0.1.0"
+edition = "2021"
+description = "Dirigate - ACP bridge and mock server for testing and proxying ACP connections"
+
+[lib]
+path = "src/lib.rs"
+
+[[bin]]
+name = "dirigate"
+path = "src/bin/dirigate.rs"
+
+[dependencies]
+# CLI
+clap = { version = "4", features = ["derive", "env"] }
+
+# Serialization
+serde = { version = "1.0", features = ["derive"] }
+serde_yaml = "0.9"
+serde_json = "1.0"
+
+# Async runtime
+tokio = { version = "1", features = ["full"] }
+tokio-stream = { version = "0.1", features = ["sync"] }
+async-stream = "0.3"
+
+# Web server
+axum = "0.8"
+
+# HTTP client (for bridge mode)
+reqwest = { version = "0.12", features = ["json", "stream"] }
+reqwest-eventsource = "0.6"
+futures-util = "0.3"
+
+# UUID generation
+uuid = { version = "1.0", features = ["v4", "serde"] }
+
+# Date/time handling
+chrono = { version = "0.4", features = ["serde"] }
+
+# Error handling
+anyhow = "1.0"
+thiserror = "1.0"
+
+# Logging
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "json"] }
+
+# Random number generation
+rand = "0.8"
+rand_chacha = "0.3"
+
+# CLI formatting
+owo-colors = "4"
+tabled = "0.16"
+shell-words = "1.1"
+
+# Internal dependencies
+dirigent_protocol = { workspace = true }
+dirigent_core = { workspace = true, features = ["server"] }
+dirigent_tools = { workspace = true }
+opencode_client = { workspace = true, optional = true }
+
+[dev-dependencies]
+dirigent_acp_api = { workspace = true }
+
+[features]
+default = []
+ingest = ["dep:opencode_client"]
+
+[lints]
+workspace = true