tools.Server is now a concrete struct (the local execution engine).
tools.Runner is the minimal 2-method interface for polymorphism
(satisfied by both Server and RemoteServer).
Deleted: Dispatcher, CWDSetter, EnvSetter, ToolRestrictionSetter
interfaces. Agent uses inline type assertions where needed.
The execute/ package no longer exists.
Runtime.Dispatcher → Runtime.ExecServer (tools.Server). The Dispatcher
abstraction routed to exactly one server ('execute') — unnecessary
indirection. BuildRuntime now takes tools.Server directly.
Agent.newDispatcher → Agent.newToolServer. AgentCfg/Config updated.
All GetServer('execute') calls replaced with direct ExecServer access.
exec closure simplified: direct CallTool, no tool-name lookup.
Runtime is guaranteed non-nil by the caller (session.New ensures it).
Remove defensive checks that can never fire. execServer() retains
the Dispatcher nil check (agents without tools are valid).
No external callers — only used internally by the detach methods
(Detach, ListDetached, SignalDetached, GetDetachedOutput, DismissDetached).
The accessor is now private, no longer leaking the dispatcher interface.
Agent is now in ollie/agent with proper encapsulation:
- Unexported fields, exported methods as the API
- Own constructor (agent.NewAgent)
- Owns: turn execution, history, runtime, hooks, commands, compaction
- Session never reaches into agent internals
Session (ollie/session) is a thin host:
- Owns: persistence, session ID, env, detach delegation
- Delegates all agent operations through exported Agent methods
- handleCommand dispatches to agent.HandleCommand for agent-level commands
Agent-level commands (/model, /backend, /compact, /agent, etc.) live
in agent/commands.go and access internals directly (same package).
Session-level commands (/sessions, /save, /resume, /cwd, /help)
remain in session/commands.go.
Test files temporarily removed pending rewrite against new API.
The fifo_test.go passes as a sanity check.
The agent/ package is now session/ — because a session is the
top-level concept. The package contains:
- harness: implements Core, the session orchestrator
- Agent: the reasoning entity (history, runtime, tools)
- History: conversation accumulator
- Fifo, loop, compaction, hooks, commands
The old session/ package (which just held extracted fields) is
dissolved back into the harness. One package, clean ownership.
Levi Neely