Add typed S0-S6 multi-origin join terms

README.md

@@ -11,6 +11,7 @@ EPAC is the independent repository for The Interdependency's elementary/particle
 - Research status: provisional / cross-domain hypothesis unless a narrower artifact says otherwise.
 - Empirical status: no transfer. Repository independence does not make a physics or chemistry claim true.
 - Molecular-shape prediction: **FALSIFIED** for the preregistered comparison carried from the incubator; that negative result is preserved as evidence.
+- Typed multi-origin join term: native correctness candidate. It preserves authored S0-through-S6 lineage and named seating; its legacy count bag is a demonstrably lossy sidecar. This does not change molecular-shape standing.
 - UCNS Public Gonol position operations beyond carrier identity: `hmmm`.
 - Standing-wave / field descriptions: live modeling direction, not established external physics merely by appearing here.
 
@@ -27,6 +28,7 @@ The extraction preserves the stack research artifacts and their epistemic status
 ## Structure
 
 - `epac_*.py` — executable constructors and comparison surfaces migrated from the incubator.
+- `epac_join_term.py` — strict EPAC-owned S0-through-S6 join-tree candidate, equality, public recovery, and lineage replay.
 - `subatomic/` — subatomic construction candidates, receipts, and executable witnesses.
 - `tests/` — repository-level regression and falsification tests.
 - `data/` — bounded input/comparison data used by the current experiments.
@@ -81,6 +83,28 @@ the archive-coverage gate rejects omitted modules. Current candidates also
 package `epac_atomic_derivation` and `epac_b_derivation`; the immutable v0.1.0
 release retains its original bytes.
 
+The post-v0.1.0 join-term candidate is public representation research, not a
+secret-key surface or new release. Its METAPAT license identity, source hashes,
+candidate digest, minimal same-bag/non-isomorphic witness, and nonclaims are in
+`data/epac-join-term-v0-receipt.json`.
+
+```bash
+python tools/generate_join_term_v0.py --check
+python -m pytest -q tests/test_epac_join_term.py
+```
+
+Public-only recovery does not invoke construction state:
+
+```python
+import json
+from importlib.resources import files
+from epac_join_term import recover_epac_join_tree, trace_origin_lineage
+
+receipt = json.loads(files("epac_data").joinpath("epac-join-term-v0-receipt.json").read_text())
+tree = recover_epac_join_tree(json.dumps(receipt["candidate"], sort_keys=True, separators=(",", ":")))
+lineage = trace_origin_lineage(tree, tree.origins[-1].origin_id)
+```
+
 ```bash
 python -m pip install uv==0.11.18
 uv sync --locked --extra test --extra build
@@ -151,3 +175,5 @@ subject to that license when distributed. Dependencies retain their own rights
 and licensing status; this selection grants no rights to UCNS or other upstream
 projects. [License provenance](docs/license-selection.json) records the owner
 instruction and its resolution using the organization’s weak-copyleft convention.
+
+The repaired join-term wire `0.2.0` binds the merged METAPAT license, separates stored state from identified scalar readouts, and preserves authored adjacent-scale relations without claiming Vector, Transformation, or Time. The static candidate provides no resulting state-change or actual occurrence evidence. See `docs/multi-origin-join-term-v0.md` for the explicit pre-merge API migration.

docs/PROVENANCE.md

@@ -108,3 +108,27 @@ event is recorded in [docs/graduation.json](graduation.json) and the byte-identi
 local copy of the [Stack-owned scoped receipt](https://github.com/The-Interdependency/stack/blob/1c6ec9fb85d2ead58b13d806a5c4a9bc3803c936/integration/epac/authority-transition.json).
 Use the release tag and SHA256SUMS to inspect the immutable bytes; use the
 current graduation record to inspect subsequent lifecycle standing.
+
+## Post-release EPAC join-term candidate — 2026-09-29
+
+The typed multi-origin join-term candidate starts from EPAC commit
+`1e5c999286f12221eff9870d1372203ac7935f2a` (tree
+`ce7781938ff684d826bd91f475b5423bd56b146a`). It consumes the semantic
+application `metapat.application.epac_join_terms` from METAPAT commit
+`1cdfb09dd00a451cee30eec2e78624df8c682662` (tree
+`d946a5a18b0c53fd561dcd9d68fdf36d5dd11638`) with application digest
+`461ef7e059aa65b514017683ba9b57058ee9f582bc63748fabd021cdeb660b4b`.
+Current build/evidence doctrine is identified as skill-lib commit
+`516933d98f9de376f4e498f44059043dc0d96470`.
+
+The deterministic receipt binds exact hashes of every non-generated feature
+input because a committed file cannot contain the hash of the commit that
+contains itself. The generated JSON receipt and Markdown audit are excluded
+from that manifest to avoid a self-hash cycle; their containing Git commit
+externally binds all bytes. UCNS is not consumed or
+modified by this candidate. METAPAT retains semantic authority; EPAC owns the
+schema, constructor, equality, serialization, public recovery, and evidence.
+No scientific, geometry, proof, measurement, confidentiality, or release
+authority transfers.
+
+The repaired join-term wire `0.2.0` binds the merged METAPAT license, separates stored state from identified scalar readouts, and preserves authored adjacent-scale relations without claiming Vector, Transformation, or Time. The static candidate provides no resulting state-change or actual occurrence evidence. See `docs/multi-origin-join-term-v0.md` for the explicit pre-merge API migration.

docs/domain-claims.md

@@ -20,11 +20,17 @@ EPAC may construct and test relational representations involving atomic, subatom
 
 “Standing wave,” “field,” “particle,” “harmonic,” and related terms remain domain-qualified. In particular, METAPAT harmonic language does not itself mean physical vibration or frequency.
 
+The multi-origin join-term candidate uses METAPAT spine names under the exact `metapat.application.epac_join_terms` license while retaining EPAC names for every semantic field. `S5 energy readout` means only the candidate's exact EPAC occupancy functional. `phase` means an EPAC state coordinate. Neither name imports chemistry or physics. A shared bag, count, phase, or geometry does not establish ancestry; only an authored typed join does.
+
 ## Usage guidance
 
 Use `EPAC` as the stable project name. When a longer explanation is needed, describe the actual research scope rather than inventing a fixed acronym expansion. Stronger ontology claims require an explicit domain claim and evidence.
 
+Use the complete join tree for exact lineage or seating replay. Treat its `legacy_bag` as a lossy migration sidecar, never as the Tensor-role structure. Public-only recovery establishes no secrecy boundary.
+
 ## hmmm
 
 - whether standing-wave language will earn a narrower ratified EPAC ontology claim after explicit external-physics comparison
 - whether any fixed lexical expansion of EPAC is useful enough to ratify; none is currently required
+
+The repaired join-term wire `0.2.0` binds the merged METAPAT license, separates stored state from identified scalar readouts, and preserves authored adjacent-scale relations without claiming Vector, Transformation, or Time. The static candidate provides no resulting state-change or actual occurrence evidence. See `docs/multi-origin-join-term-v0.md` for the explicit pre-merge API migration.

docs/epac-join-term-v0-audit.md

@@ -0,0 +1,90 @@
+# EPAC join-term v0 deterministic audit
+
+Classification: **PUBLIC_ONLY_RECOVERY_SURVIVED**
+
+The public receipt recovers one complete typed S0-through-S6 join tree and its exact authored lineage without constructor or private state. The legacy count bag is retained beside the tree and is demonstrably non-injective.
+
+## Exact authority
+
+- EPAC base: `1e5c999286f12221eff9870d1372203ac7935f2a` (tree `ce7781938ff684d826bd91f475b5423bd56b146a`)
+- EPAC feature source manifest: `c3aad9a890e4ea42afcc8118a14c21b8ef10044ec1520a0d32f7daf668fbff0b`
+- METAPAT producer: `1cdfb09dd00a451cee30eec2e78624df8c682662` (tree `d946a5a18b0c53fd561dcd9d68fdf36d5dd11638`)
+- METAPAT application: `metapat.application.epac_join_terms@epac-join-terms-application-v4`
+- METAPAT application digest: `461ef7e059aa65b514017683ba9b57058ee9f582bc63748fabd021cdeb660b4b`
+- skill-lib: `516933d98f9de376f4e498f44059043dc0d96470` (tree `a1465ddf1de9519c9abc1a97d058432ba71bb257`)
+- UCNS consumed: `false`; UCNS law modified: `false`
+
+The containing feature commit cannot be embedded in a file inside itself. The evidence therefore binds the exact pre-feature EPAC base plus SHA-256 of every non-generated feature input; the generated receipt and audit are excluded to avoid a self-hash cycle, and the final Git commit binds all bytes externally.
+
+## Exact result
+
+- Candidate digest: `11504eb61c4952fc3da04a51d3779484194292db2c8a5c3174b3c3ea540e6442`
+- Candidate JSON SHA-256: `821d35a1e42c8d22423f78fdce8449066af40392d47f3e79e5b30b8f993fcbfd`
+- Evidence digest: `215844eda0b1b1f3edf95bf7b360df84deecc97382a88f777c150fa50e359839`
+- Origins: `7`
+- Authored joins (no Transformation or Time claim): `6`
+- Slots: `18` (`6` members, `6` holes, `6` leftovers)
+- Native operation: exact authored origin-lineage and named-seating replay
+
+## Minimal lossy-projection witness
+
+- Baseline digest: `11504eb61c4952fc3da04a51d3779484194292db2c8a5c3174b3c3ea540e6442`
+- Reordered digest: `f74f9227a79acf84588b11d153bf66f9490d3aa18d8e899b6266c11ca3594633`
+- Shared bag SHA-256: `ae6e48f3245310cefc233eb091a2cb872ac7ab0302296735d3a1b5fe9e2a2f9f`
+- Bags equal: `true`
+- Join-isomorphic: `false`
+- Conclusion: the legacy bag cannot uniquely recover authored seating or the complete join tree.
+
+## Exact-instance identity projection witness
+
+- Renamed identity namespace: `fixture-b`
+- Renamed candidate digest: `7e30d6f4942e215462254dec9723a1deeb4e71d680e2cc960f227b02240f420d`
+- Bags equal: `true`
+- Join-isomorphic: `true`
+- Exact instance lineages equal: `false`
+- Conclusion: the legacy bag does not select exact instance identity labels, while structural lineage up to alpha-renaming is unchanged.
+
+This is information loss. It is not a secrecy, computational-hardness, or confidentiality result.
+
+## Source hashes
+
+- `README.md`: `7e28c7c092f7551b11a03c9db7862e27ec88ff6f81167ed3d3f99db26e29a18b`
+- `data/metapat-epac-join-terms-application-v4.json`: `7f3ff74394b48c2162818fad8a373d1b88547b0df73beb8a604376022dcddf07`
+- `docs/PROVENANCE.md`: `b410815a47ea9a8229406241616a9dc143ff09eb8da717456c019379efa6d5ee`
+- `docs/domain-claims.md`: `f6f7f517e127a517a4acccba5527692239700c128b7bf0ecef9603e8c155c911`
+- `docs/multi-origin-join-term-v0.md`: `6efb441f4421edf84c22556b46e438cc2da4f51536c522d3b6556af7b1c66a39`
+- `docs/research-status.md`: `1f5194f0dc44521b6dc81d9a9494c72ff385fd879b8eb2b2849824640c5c2d07`
+- `docs/work-graph.json`: `4edb37ace798511ff4b5f667afd1f0a3852ce78b7335349aaa9662171de0b9e9`
+- `docs/work-graphs/epac-join-term-v0.json`: `7487441ec7e3ff3203635e245fccba5d293192cef5201c657946a15788166f16`
+- `epac_boundary_probe_completeness.py`: `61df1624adc2970fe2e7d9d94ee15359decd42ddb7285ac223bd46eb748541ec`
+- `epac_join_term.py`: `4697da5c76d5dfc77aedc5c84c71b7175180550824b6a1a2c1bf23a8548839af`
+- `pyproject.toml`: `414cdc71cdb2e0ff859fcb59a359d57a5327e6b105e0ff010a522216dcd3881f`
+- `tests/test_boundary_probe_completeness.py`: `254590ac58a54979f0f05534cea357e2369577e96304dda0ae337f3114d13ac4`
+- `tests/test_epac_join_term.py`: `ed060a6ef7903f178e3da6b94890f088de8b37dc7b94e6e41b4ccc15a3b7f5c8`
+- `tools/generate_join_term_v0.py`: `1836734e0ba692f23f604838ed3146c811528266a341979366eff6b19447e331`
+
+## Explicit nonclaims
+
+- Vector action, resulting state Transformation, or actual Time sequence
+- chemical or physical truth
+- molecular geometry or shape prediction
+- UCNS correspondence, topology, theorem status, or gonol identity
+- energy coupling, conservation, entropy, force, or field behavior
+- cryptographic secrecy, confidentiality, public-key separation, or computational hardness
+- PCEA compatibility
+- production suitability
+- release or protocol authority
+
+## hmmm
+
+- Authored adjacency and its stored order do not establish state changes or actual occurrence order; Transformation and Time remain unlicensed for this candidate.
+- Whether a useful operation exists that requires secret EPAC state and cannot be efficiently reproduced from a legitimate public projection remains unestablished; this candidate is wholly public.
+- Whether exact lineage and seating replay improve an independently preregistered EPAC task remains unmeasured.
+- Whether any later UCNS correspondence is useful requires a separate license and test without rewriting UCNS law.
+
+## Replay
+
+```bash
+python tools/generate_join_term_v0.py --check
+python -m pytest -q tests/test_epac_join_term.py
+```