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Lesson 101: Cross-Product Escalation Lineage Handoff Packet - Shared Semver, Split train_cycle_id Namespaces, and Joint Attestation Slice

Direct answer: A cross-product escalation lineage handoff packet is the contract + manifest that lets two live titles share tooling and Lesson 99 semver while keeping separate train_cycle_id namespaces (A:: / B:: or product UUID prefixes), joint Lesson 97 slice hashes for group-level audits, and zero blended player rows across Lesson 92–100 CSVs.

Baby days out illustration suggesting two strollers on one path without swapping name tags

What this lesson solves

Acquisitions and second franchises tempt teams to paste spreadsheets together. This packet keeps shared policy and separate facts.

Prerequisites: Two product lines with distinct store ids, a pinned lesson78_* semver from Lesson 99, and legal approval for joint attestation recipients. Expected time: about ninety-five minutes including a tabletop on a shared mail vendor.

What you will build

  1. lesson78_cross_product_escalation_lineage_handoff_policy.md (contract below)
  2. lesson78_cross_product_escalation_lineage_handoff.csv (one row per handoff event—launch, acquisition close, or tooling merge)
  3. A joint_attestation_manifest.sha256 listing only aggregated counters per product, not row-level joins

Step 1 - Define handoff gate classes

gate fail signal posture
H1 – Namespace collision duplicate bare train_cycle_id across products block until prefix migration
H2 – Semver fork products on different to_semver without compatibility matrix block sends until aligned
H3 – PII bleed joint SQL that returns player ids from both titles fail audit
H4 – Silent merge one Lesson 95 row referencing two products split rows

Step 2 - Author lesson78_cross_product_escalation_lineage_handoff_policy.md

Minimum sections:

  1. Purpose – enable portfolio-level assurance without data lake recklessness.
  2. Naming – mandatory product_code column on every Lesson 92–100 CSV row; reject imports without it.
  3. Joint attestation – build a manifest of file paths + aggregate checksums; never ship a single blended CSV.
  4. War-room – Lesson 92 decks may be combined only if each slide footer lists both dry_run_id_ref values or explicitly scopes to one product.
  5. Tooling – mail and CMS integrations must tag product_code on every outbound Lesson 93 bundle.
  6. Exit – if a product sunsets, archive its namespace under FY-YYYY-closure.zip per Lesson 100 without deleting lineage pointers.

Step 3 - Author lesson78_cross_product_escalation_lineage_handoff.csv

column purpose
handoff_id stable id
product_codes A;B ordered list
shared_policy_semver pinned Lesson 99 target
namespace_rules_version doc version for prefixes
joint_attestation_manifest_sha256 over path list + aggregate stats only
h1_h4_gate_status pass / fail
governance_owner_id portfolio role
handoff_evidence_hash sha256 over prior columns + timestamps

Step 4 - Execute handoff (40 minutes)

  1. Freeze both products’ sends for one hour or route through dual-tag pipelines.
  2. Backfill product_code on historical rows via Lesson 99 script with migration_id.
  3. Generate joint manifest from pre-aggregated quarterly stats—sums, not joins on player keys.
  4. Validate Lesson 95 overrides: each row carries exactly one product_code.
  5. Sign handoff_evidence_hash with portfolio governance + per-product leads.

Step 5 - Tabletop - “one CRM for both games”

A support macro inserts the wrong product_code. Outcome: H4 risk; add CRM enforced picklist and regression test on Lesson 94 kill-switch tags.

Pro tips

  • Color decks – use distinct slide accents per product even in a combined Lesson 92 deck.
  • Cost allocation – tie override counts to product P/L lines for board clarity.
  • Disaster recovery – replicate CSV stores per product bucket; joint manifest is derived read-only.

Troubleshooting

symptom likely cause fix
Joint zip rejected by audit row-level export sneaked in regenerate from aggregates only
Semver mismatch mid-quarter one team skipped Lesson 99 window emergency patch migration
Duplicate dry-run ids copied template namespace prefix on id generator

Common mistakes

  • Using a single Lesson 97 attestation_id for both products without manifest separation.
  • Letting analytics stack refund series without product_code.
  • Merging Lesson 96 telemetry JSON from both games into one blob—keep sibling files.

FAQ

Do we need two Lesson 100 closures?

Usually yes per product line plus a portfolio rollup row referencing both fiscal_closure_ids.

Can products share Lesson 95 signers?

Yes, if roster CSV documents separation of duties; still one product_code per row.

What about shared backend services?

Document shared infra in handoff policy; attribute incidents with product_code on the bridge ticket.

Lesson recap

Portfolio governance is conducting two orchestras, not smashing the sheet music into one folder.

Next lesson teaser

Next: Lesson 102: Regulator or Platform Inquiry Response Packet indexes each inquiry question to Lesson 97 / Lesson 100 object-store paths and manifest hashes—PDF cover plus CSV, no raw attachments.

Related learning

Treat the handoff as a treaty, not a merge commit.