Architecture signals & invalidated assumptions

Scope:

• Source: Weekly Learnings from 2026-01-09 to 2026-01-30
• Nature: Retrospective synthesis
• Original Weekly Learnings unchanged

Architecture signals

• Pattern: Stabilise the core system before scaling or expanding feature surface.
• Pattern: Treat prompt and schema contracts as first-class architectural artefacts.
• Heuristic: Derive documentation from executable evidence to reduce drift.
• Constraint: Synthesis requires explicit structural guardrails when multiple learning threads coexist.

Assumptions invalidated

• Assumption: Progress equals visible shipping every week → Progress can be stabilisation, hardening, and synthesis when it protects system integrity.
• Assumption: Flexible prompts and ad-hoc workflows are sufficient → Explicit contracts and structured pipelines are required for consistency.

Confidence notes

• Signals observed across multiple weeks: stabilization-before-scaling, prompt/schema contracts, evidence-first documentation, synthesis guardrails.