docs(plan): Phase 3a, 3b and 3c for AI humanisation

3a ports the provider structure from MEGAIFRASTRUCTURE's chat/ — SDK-free
types, one adapter per provider — but deliberately not its interface: this
phase needs text in, text out, not a chat transcript and tool protocol. It
carries forward the MiniMax details that module learned the hard way: the
native /v1 route rather than the /anthropic shim, an Open Platform key, and
stripping the inline <think> blocks M2.x emits.

3b is built around one property: batch responses are matched to commits by
an echoed index, never by position. A single skipped line under positional
matching would attach fluent, confident, wrong sentences to every later
commit, with nothing raising an error.

3c is the first plan whose output a client reads, so its verification step
is to read a narrative as the client would and check it claims no
completion, states no date, and invents nothing.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

package-lock.json

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package.json

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