Merge branch 'buffer-implementation'HEADmain

Establishes the first working baseline: moji <file> opens a file into a
ropey rope and edits it with Helix selection-first modal editing, under a
DO-178C DAL-C requirements and traceability process.

Prior to this, main tracked four files and src/main.rs was still
println!("Hello, world!") — there was no buildable state to build on.

Verified on a fresh clone of the branch with no untracked files:
cargo build; clippy --all-targets -D warnings clean; 294 tests passing;
scripts/check-trace.sh reports 98/98 requirements traced in both
directions.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 87 insertions, 2 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 052ab45..8a24eac 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,91 @@
 [package]
-name = "mojibake"
-version = "0.1.0"
+# The crate is `mojibake-editor` because `mojibake` was already taken on
+# crates.io by an unrelated encoder. The binary is `moji` and the library
+# target is `mojibake`, so neither the command nor `use mojibake::…` carries
+# the suffix.
+name = "mojibake-editor"
+version = "0.0.1"
 edition = "2024"
+# Let-chains (`if let ... && let ...`) are the binding constraint; they
+# stabilised in 1.88. Edition 2024 alone would only need 1.85.
+rust-version = "1.88"
+description = "文字化け — a terminal text editor with Helix-style modal editing"
+authors = ["rottedfm <rottedfm@proton.me>"]
+license = "BSD-2-Clause"
+readme = "README.md"
+build = "build.rs"
+repository = "https://git.mojibake.wiki/repos/mojibake"
+keywords = ["editor", "terminal", "tui", "modal", "helix"]
+categories = ["text-editors", "command-line-utilities"]
+
+# Development-only files that need not ship in a published tarball.
+exclude = [".envrc", ".gitmessage", "scripts/"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "mojibake"
+path = "src/lib.rs"
+
+[[bin]]
+name = "moji"
+path = "src/main.rs"
 
 [dependencies]
+better-panic = "0.3.0"
+clap = { version = "4.6.1", features = [
+    "derive",
+    "cargo",
+    "wrap_help",
+    "unicode",
+    "string",
+    "unstable-styles",
+] }
+color-eyre = "0.6.5"
+# default-features = false drops json5/yaml/ini from the dependency tree entirely;
+# TOML is the only configuration format mojibake accepts. See MJB-HLR-014.
+config = { version = "0.15.25", default-features = false, features = ["toml"] }
+crossterm = { version = "0.29.0", features = ["serde", "event-stream"] }
+directories = "6.0.0"
+encoding_rs = "0.8"
+encoding_rs_io = "0.1"
+futures = "0.3.32"
+human-panic = "2.0.8"
+libc = "0.2.186"
+ratatui = { version = "0.30.2", features = ["serde", "macros"] }
+# Byte-indexed by design: `metric_chars` is deliberately NOT enabled.
+#
+# Pinned with `=` rather than the default caret requirement. This is a
+# pre-release under a DAL-C classification, and a caret requirement would
+# silently accept a later beta whose behaviour has not been verified against
+# our requirements. See docs/reviews/library-selection.md (MJB-DR-006).
+ropey = "=2.0.0-beta.1"
+serde = { version = "1.0.228", features = ["derive"] }
+signal-hook = "0.4.4"
+strip-ansi-escapes = "0.2.1"
+strum = { version = "0.28.0", features = ["derive"] }
+thiserror = "2"
+tokio = { version = "1.52.3", features = ["full"] }
+tokio-util = "0.7.18"
+toml = "1.1"
+tracing = "0.1.44"
+tracing-error = "0.2.1"
+tracing-subscriber = { version = "0.3.23", features = ["env-filter", "serde"] }
+unicode-segmentation = "1.13"
+unicode-width = "0.2"
+
+[dev-dependencies]
+pretty_assertions = "1.4.1"
+tempfile = "3"
+
+[build-dependencies]
+anyhow = "1.0.103"
+gix = { version = "0.86", default-features = false, features = ["max-performance-safe"] }
+vergen-gix = { version = "10.0.1", features = ["build", "cargo"] }
+
+# Read the optimization guideline for more details: https://ratatui.rs/recipes/apps/release-your-app/#optimizations
+[profile.release]
+codegen-units = 1
+lto = true
+opt-level = "s"
+strip = true