Issue #1223: Define data portability implementation plan

cspell.json

@@ -296,6 +296,11 @@
         "EXPLAIN",
         "xform",
         "tolower",
+        "conftest",
+        "demoable",
+        "demoability",
+        "runbook",
+        "runbooks",
         "dklen",
         "altchars"
     ],

docs/INDEX.md

@@ -103,6 +103,7 @@
 - [`advisor-qp-direct-retrieval.md`](operations/proposals/advisor-qp-direct-retrieval.md) — ADR-0003 implementation plan: rewire Advisor/semantic-search to retrieve from the Query Planner directly (GraphQL becomes a peer facade). Covers the QP async-contract graduation, the net-new partial-result/pending-fragment model, shared query construction, QP auth, the two regimes, and a sequenced t-shirt-sized issue breakdown with a Regime-A-first recommendation (#1053).
 - [`mdr-transformation-output-validation.md`](operations/proposals/mdr-transformation-output-validation.md) — Validate the MDR bulk-transform preview output against the target LIF schema (Ajv) at authoring time; uses the already-wired `targetSchema` prop (#973).
 - [`cf-ci-improvements.md`](operations/proposals/cf-ci-improvements.md) — External review of the AWS delivery setup (CloudFormation/SAM/GitHub Actions/`aws-deploy.sh`): 8 prioritized improvements — PR-time CI, lockfile-based image builds, workflow deduplication, targeted/verified deploys, uv standardization, `.params` secrets hygiene, per-org `STACK_ORDER` generation. Epic #1074 (#1066–#1073).
+- [`mdr-import-export-portability.md`](operations/proposals/mdr-import-export-portability.md) — Epic #1223 plan: make MDR schemas and mappings portable between installs — no database IDs in files, edit-by-upload, one converter between file and rows. Grounds three live export failures (the third filed as #1321), the ID-based upload lookups (#762–#765) and five kinds of reference; flags six gaps no ticket covers (inclusions and value mappings never exported, no schema update path, empty mapping groups, hand-synced seed files, unbounded parent chains, unowned mapping targets). Five decisions made — mirror-with-preflight import, `(group, target path)` mapping identity, JSONata-only lossless round trip, full ancestor-chain resolution — plus a phased plan, the converter contract (#1333) and nine further proposed tickets; a document-store migration is out of scope, deferred to #1132.
 
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