Each AgentProvider now owns its skills / prompt / provision /
supervise_mcp end-to-end. The base ABC declares all four as
abstract; ClaudeAgentProvider and CodexAgentProvider each carry
their own copy loop.
Per PR review feedback (review #128): the shared
_provision_apply.py abstraction was weak — Claude and Codex
harnesses already diverge (codex's dummy-auth + login-status
verify has no claude analogue) and forcing both onto one helper
just postpones the split. Duplication is intentional.
Deletes bot_bottle/_provision_apply.py and consolidates testing
under tests/unit/test_contrib_{claude,codex}_provider.py (one
file per provider, covering all four methods).
Lift the provider-specific blocks of agent_provision_plan into
contrib/claude/agent_provider.py and contrib/codex/agent_provider.py,
behind a new AgentProvider ABC and a lazy get_provider() registry
(mirrors PRD 0048's contrib convention).
agent_provision_plan and runtime_for stay as thin shims so existing
callers in backend/{docker,smolmachines}/prepare.py and cli/start.py
keep working without per-call edits — the shipping diff in this commit
is purely 'who owns the producer'.
Adds bot_bottle/_provision_apply.py — the backend-agnostic
skills / prompt / declarative-plan apply loops the per-provider
default methods will dispatch through in the next commit.