v0.5.0

Added

• Plugins: Claude-format plugins in .decsr/plugins/ and ~/.decsr/plugins/
  add commands (/<plugin>:<command>), skills (<plugin>:<skill>, usable in a
  role's skills:) and agent roles (<plugin>:<agent>). /plugin lists them
  and enables, disables or reloads one. Frontmatter (description,
  argument-hint) is also read in .decsr/commands/*.md.
• Workspace suggested prompts: the empty prompt shows the likely next step as
  ghost text (fix a failed Build & test, /compact or a review when all
  nodes are done, /resume in a fresh session). Right accepts it, Esc
  hides it.
• scripts/install-plugins.sh installs a recommended plugin set into
  ~/.decsr/plugins and writes a plugins profile that maps their skills to
  the built-in roles (--dry-run, --uninstall).

Added

• Architect agent: new pipeline role (internal/agent/architect.go,
  prompt prompts/embedded/architect-system.md, registered in
  cmd/orchestrator/main.go). Default skills: agentic-engineering,
  architecture-decision-records, codebase-onboarding.
• MLX runner: local Apple MLX backend (internal/runner/mlx.go with
  tests), wired into the runner factory and IsLocalRunner.
• GitHub Copilot runner: new copilot runner
  (internal/runner/copilot.go with tests), available via the factory.
• Beads integration: new internal/beads package for durable task
  tracking, blockers and multi-session handoff.
• PM decomposition: new prompts/embedded/pm-decompose.md and
  expanded PM agent logic (decompose / negotiate flows) with
  pm_decompose_test.go and pm_negotiate_test.go.
• Tester update flow: new prompts/embedded/tester-update.md and
  significant expansion of internal/agent/tester.go to update existing
  tests.
• Coder no-op handling: detect rewrites that produce no changes and
  skip file writes (coder_nochanges_test.go, refactor of coder.go).
• Go declaration chunker: new internal/chunker/go_decl.go for
  chunking by Go top-level declarations.
• Runner ping: new internal/runner/ping.go health-check utility for
  runners.
• Ollama improvements: unwrap JSON envelopes and improve plain-text
  output handling in internal/runner/ollama.go.
• TUI: substantial rework across model.go, setup.go, sysmon.go,
  artifact_viewer.go, statusbar.go, styles.go, control.go,
  startup.go and home.go (with updated tests).

Changed

• Runner factory: promptLanguage argument is now ignored. All
  agents always respond in English regardless of the user's locale. The
  parameter is kept only for signature compatibility; SkillRunner no
  longer carries a promptLanguage field.
• Orchestrator: significant refactor of internal/orchestrator/orchestrator.go
  to integrate the new roles.
• Planner: updates to internal/agent/planner.go, planner-system.md
  and coder-initial.md prompts.
• executil: simplification of internal/executil/command.go.
• New RoleArchitect in internal/bus/types.go; minor updates to
  artifacts, prompts/loader, config and cmd/orchestrator.

Removed

• QA agent: removed internal/agent/qa.go,
  prompts/embedded/qa-system.md, the qa entry in default config and
  its registration in cmd/orchestrator/main.go.
• cpulimit package: removed internal/cpulimit/ together with all
  cpulimit.Apply(...) call sites. The ReservedCores project config
  field has been dropped from defaults.
• omlx_claude runner: removed internal/runner/omlx_claude.go
  (introduced and rolled back within this cycle).

Breaking Changes

• Per-locale agent responses are no longer supported. Any configuration
  relying on promptLanguage to force a non-English response language
  will silently fall back to English.
• The qa agent role and its configuration entry have been removed.
  Configurations referencing agents.qa should be cleaned up.
• The project.reserved_cores configuration option has been removed.