v0.3.0

The bulk of the v0.2 development line, which landed on main after the early
v0.2.0 tag and had not yet been packaged. A major terminal-UX overhaul plus an
MCP client, project memory, and live model switching.

Added

• Vim modal input editor — a self-built multiline editor (normal / insert /
  visual modes, motions, operators, counts, undo/redo, OSC52 clipboard) that
  replaces rustyline on capable terminals and degrades back to it otherwise.
• Semantic color system — 8 named tokens with truecolor → 256 → 16 → NO_COLOR
  degradation, applied across the header, streaming output, permission prompt,
  help, modal editor, and pager.
• Unified TUI header — a DeepSeek-blue box with an orca mascot and a labeled
  model / cwd / session identity panel; one-line fallback on narrow / non-tty.
• Markdown rendering in the pager (/show, /history) — headings, bold /
  italic / inline code, fenced code blocks, block quotes, lists, links, and
  CJK-aware tables, parsed with pulldown-cmark (behind the tui feature).
• Code syntax highlighting — a hand-rolled zero-dependency lexer highlights
  fenced code blocks and /show of standalone code files; the palette is
  finalized via the design system and tiers across truecolor / 256 / 16.
• @-mention completion — an in-editor popup completes project files and
  directories (gitignore-aware); at submit, @path injects the file content (or
  a directory tree) so the model sees it without polluting the cached prefix.
• Runtime model switching — /model switches the model live, shows it on the
  status bar, and persists the choice to config.toml. An in-editor picker popup
  lists models fetched live from the provider's GET /v1/models, so new models
  appear and retired ones disappear automatically; unknown names are rejected.
• More runtime commands — /sessions, /resume, /new, /compact,
  /init, /tools, plus context-window fill warnings.
• Project memory — AGENTS.md is discovered (walk-up) and injected into the
  REPL / run / issue prompts; /init generates one agentically.
• MCP client — connect to stdio MCP servers and expose their tools alongside
  the built-ins (mcp feature, on by default).
• gitignore-aware search tool and context compaction (/compact).

Changed

• HTTP TLS uses rustls (friendlier for aarch64 cross-compilation).
• bash tool output is capped (32 KiB per stream) to prevent context overflow.

Fixed

• Numerous modal-editor fixes: inline-cursor origin offset, viewport clearing on
  resize / exit, charwise multiline paste, and insert-mode arrow keys.

v0.2.0

First packaged release with prebuilt binaries for all platforms, including
aarch64 Linux for single-board computers (Raspberry Pi 4B/5, Orange Pi 5
Plus/5 Max).

Added

• Headless orcarein run "<task>" — execute one task non-interactively and
  exit (scriptable / CI-friendly).
• orcarein issue <number> — fetch a GitHub issue and work it end-to-end
  (bring-your-own-key self-bootstrap loop).
• Cost/usage meter: per-turn token + cache-hit + spend line, context-window
  fill %, an economy cache mode, and /usage (= /context) on demand.
• Tool-call repair: malformed tool calls are corrected and surfaced as
  self-correcting errors instead of aborting the turn.
• Session management: interactive session resume picker, session delete,
  and unambiguous short-id prefix matching for resume/delete.
• Terminal UX: an alt-screen overlay + pager for /show <file> and /history,
  with / incremental search (n/N navigation, wrap-around, match highlighting);
  a GPIO live monitor (orcarein hw monitor, hardware feature). All
  capability-gated — degrades to plain output over SSH / serial / headless.
• Cross-SoC hardware layer (orcarein-hardware): board GPIO profiles for
  Raspberry Pi 4B/5 and Orange Pi 5 Plus/5 Max (pinouts transcribed from the
  official vendor docs), and a gpiocdev-based GPIO backend that sets/reads
  pins by logical name across Broadcom and Rockchip boards.

Changed

• HTTP client now uses rustls instead of OpenSSL — portable
  cross-compilation to aarch64 and bundled roots (no system cert store needed
  on minimal SBC images).
• CI now lints and MSRV-checks the full feature matrix
  (default / --all-features / --no-default-features).
• Hardware GPIO backend migrated from the retired, Broadcom-only rppal to the
  SoC-agnostic Linux character device (gpiocdev).

v0.1.0

First MVP milestone (v0.1.0-mvp). A small, hackable terminal agent.

Added

• Streaming REPL agent harness over DeepSeek V4 and OpenAI-compatible providers
  (token-by-token output, multi-turn context).
• Provider trait with DeepSeek, OpenAI, and a MockProvider implementation,
  sharing one OpenAI-compatible SSE parser.
• Tool-use dispatch loop with a 5-tool suite: read_file, write_file,
  list_dir, bash, edit — each gated by a per-tool permission prompt.
• Session model with JSON persistence: save, list, and resume conversations;
  cumulative token-usage tracking.
• Configuration system: config.toml + a SecretStore (secrets.toml, 0600
  on Unix); layered precedence (CLI flag > env var > TOML > default). API keys
  never touch config.toml or CLI flags.
• orcarein doctor offline health checks; quiet-by-default tracing diagnostics
  (opt in via RUST_LOG).
• clap-based CLI, directories-based cross-platform paths.