The entire classifier indirection (interfaces, type assertions, RPC
methods for classification, closure wrappers in BuildRuntime) is replaced
by a simple map[string]ToolInfo on Runtime.
The .meta file is read once into ToolInfo. The loop reads fields directly:
rt.ToolMeta[name].ReadOnly (was: rt.CanParallelize(name))
rt.ToolMeta[name].Tier (was: rt.MemoryTier(name, args))
rt.ToolMeta[name].OutputFormat (was: rt.OutputFormat(name))
rt.ToolMeta[name].ResetsCounter (was: rt.ResetsCounter(name))
Removed: ParallelClassifier, MemoryTierClassifier, OutputFormatClassifier
interfaces, toolClassifier type, and all closure-wrapping in BuildRuntime.
The RPC methods on Server/Conn stay (used by ollie-remote) but the agent
no longer routes through them.