Update Context prompt fragment

[brillout]

- DECISIONS.md # Decisions taken, and why
- GOAL.md # The goal of the project (includes long-term direction, scope, non-scope, ...)
- KNOWLEDGE.md # Observed facts (non-common knowledge, non-obvious knowledge, insights) relevant to the project
- MARKET_RESEARCH.md # Ongoing market research
- tickets/**.md # List of things to potentially work on, format: path/to/ticket-format.md
- TODO_AGENTS.md # AI task queue

[brillout]

@suleimansh Updated context