Engineering analysis layer

spec-my-A §24.16 — local structural intelligence under application/internal/analysis/.

Graph kinds

Graph	Source
symbol	Go AST (`go/parser`)
dependency	Go imports
flow	`.asagiri/products/<id>/flows/*.yaml`
event	`contracts/events.yaml`
api	`contracts/api.openapi.yaml`
migration	`*/migrations/.sql`
ownership	Path heuristics (`application/internal/...`)

asa analysis build --product workspace-saas

Writes .asagiri/analysis/<product>/graphs.json (all graphs in one bundle).

internal/analysis/
  ast/
  symbols/
  dependencies/
  events/
  flows/
  ownership/
  architecture/
  engine.go

Used by investigation and future agent context packs.