Prompt Engineering Context Projects

Transfer Project Context — State, Not Transcript

Transferring a project means transferring its state: what's done, what's decided, what's frozen, what's left — at a fraction of the transcript's size.

Overview

The instinct when moving project context is to bring everything — and everything is exactly what doesn't fit and isn't needed. A project's transferable state is small: the pattern that was chosen, the schema that is frozen, the partitions already migrated, the runbook still unwritten. This setup loads a zero-downtime migration project in Detailed fidelity, where the package carries the expand-and-contract decision, both hard constraints, the night-window agreement, and the working assumption about schema caches — everything the next session must know, nothing it doesn't.

How to use this resource

  1. Separate state from story

    The journey to the decision stays behind; the decision travels.

  2. Carry the constraints hardest

    Frozen schemas and uptime rules are what new sessions violate first — the package locks them in.

  3. Mark the phase boundary

    Completed phases under CURRENT STATE, the rest under PENDING — progress is unambiguous.

Why This Works

  • State transfers at a fraction of transcript size — and fits where transcripts don't
  • Explicit constraints survive the session boundary that erases implicit ones
  • Phase clarity prevents the new session from redoing finished work

Best for

  • Long-running technical projects
  • Work with hard constraints (frozen schemas, uptime requirements)
  • Migrations, rollouts, and multi-phase plans

Not for

  • Transferring the project's permanent conventions — that's the Project Context Builder's future territory
  • Estimating whether the transcript would fit anyway — that's the Context Window Estimator

Use cases

  • Moving an infrastructure project across sessions
  • Carrying frozen constraints that must never be relitigated
  • Compressing days of discussion into transferable state

FAQ

How does this handoff package stop a new AI session from reopening decisions we already settled?

The HANDOFF INSTRUCTIONS tell the next session to accept KEY DECISIONS as established, not re-derive them, and if it thinks one is wrong, to raise it as an explicit question rather than silently override. Context Handoff Builder locks the expand-and-contract choice and the frozen-schema constraint in text, the implicit agreements a fresh chat erases first.

Why does the package separate CURRENT STATE from PENDING TASKS?

So progress is unambiguous: completed work (dual-write deployed, 2019 to 2023 backfill done) sits under CURRENT STATE, and the read-path switch and rollback runbook sit under PENDING TASKS. That phase boundary is what stops the new session redoing finished work; the RECOMMENDED NEXT STEP then points it straight at the first pending item.

Should I paste the generated handoff straight into the new chat?

Review it first; the closing NOTE says items were extracted "VERBATIM from the previous session (deduplicated, not paraphrased) — review and adjust before sending." Detailed fidelity carries the decisions, both hard constraints, and the schema-cache assumption, but you own confirming they are current before it becomes the first message of the next session.

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