feat(api): consolidate export retrieval GET and CLI

ARCHITECTURE.md

@@ -69,7 +69,7 @@ boundaries above remain the target modular MSA architecture.
 | `corpus_split` | cutoff-safe, relation-aware partitioning |
 | `tepp_simulation` | known-truth temporal/event data generation |
 | `validation_core` | RMSE, bias, coverage, graph, Monte Carlo, and exact-head claim-promotion metrics |
-| `tepp_api` | versioned DTO, schema, terminal-result, and export contracts |
+| `tepp_api` | versioned DTO, schema, terminal-result, export, and loopback export-retrieval contracts |
 | `analysis_engine` | bounded cutoff-safe temporal evidence readiness execution and digest-bound terminal artifacts |
 | `episode_membership` | event-time episode membership containment gate |
 | `prompt_source` | prompt boilerplate is not unique latent content and not stopword deletion |

CHANGELOG.d/export-retrieval-cli.md

@@ -0,0 +1,3 @@
+### Added
+
+- `tepp_api` GAP-003A export-retrieval CLI slice (ADR 0055, active-PR, not implemented-main): naruon mints credential-free `GET /v1/exports/{export_id}` through the published `tepp-export-get` CLI onto spawned `tepp-loopback` TCP. Retrieval stays metric-free. LineageWeave is refused. `NaruonLiveService` stays POST-only. Persistence remains GAP-003B.

CHANGELOG.d/export-retrieval-http.md

@@ -0,0 +1 @@
+- `tepp_api` loopback `GET /v1/exports/{export_id}` returns the metric-free identity of one purpose-bound export that `AnalysisRunLiveService` authorized, so operators can retrieve that export without scanning artifacts (ADR 0054). `NaruonLiveService` stays POST-only. GET-by-id remains refused. Not lifecycle POST, not cancel, not collection GET, not retry, not stored-request GET, not retry-lineage GET, not lookup GET, not retry-parent GET, not GAP-010 Figma/export, not persistence.

CHANGELOG.md

@@ -38,6 +38,8 @@ All notable changes to TEPP are documented here. The format follows Keep a Chang
 
 ## [Unreleased]
 
+- `tepp_api` loopback `GET /v1/exports/{export_id}` returns the metric-free identity of one purpose-bound export that `AnalysisRunLiveService` authorized, so operators can retrieve that export without scanning artifacts (ADR 0054). `NaruonLiveService` stays POST-only. GET-by-id remains refused. Not lifecycle POST, not cancel, not collection GET, not retry, not stored-request GET, not retry-lineage GET, not lookup GET, not retry-parent GET, not GAP-010 Figma/export, not persistence.
+
 - `event_core` adds bounded Allen interval-consistency classification, atomic path-consistency closure, contradiction/resource refusals, and an explicit dependency-error fallback without claiming unrestricted global satisfiability.
 
 - `psychometric_core` recovers the Driver, Oud, and Voelkle (2017, Table 2, p. 12 `MANIFESTTRAITVAR`; §7.1, p. 19; p. 16 `MANIFESTTRAITVARstd`; footnote 4; 2017-era ctsem `summary.ctsemFit.R`; JSS PDF re-opened 2026-08-27T14:20Z from https://www.jstatsoft.org/index.php/jss/article/download/v077i05/1104) scalar standardised manifest-trait variance on current main after `0ce16e8` dropped the pre-consolidation code while research notes already named the map (register items 83–84). Table 2 names `MANIFESTTRAITVAR` `Ψ_τ` the additional time-invariant variance-covariance on the measurement level and sets it `NULL` when there is no manifest trait. Equation 5 writes `Γ ~ N(τ, Ψ)` and names that covariance the manifest traits. Section 7.1 names manifest traits stable individual differences in indicator levels, distinct from process-level `TRAITVAR` `φ_ξ`. Page 16 prints standardised matrices with the suffix `std` when appropriate. The printed example on p. 16 is `discreteDRIFTstd`, not `MANIFESTTRAITVARstd`. Footnote 4 standardises using only the relevant variance, not the total. The relevant variance for that named indicator-level correlation is `MANIFESTTRAITVAR`, not process-level `TRAITVAR` and not residual `MANIFESTVAR` `θ`. The 2017-era source forms `MANIFESTTRAITVARstd` only when `MANIFESTTRAITVAR != 0`, as `solve(sqrt(diag(MANIFESTTRAITVAR) + ridging)) %&% MANIFESTTRAITVAR` when `verbose = TRUE`. OpenMx `%&%` is `t(A) %*% B %*% A`. Unlike `TRAITVARstd`, that formation adds `diag(c(ridging), n.manifest)`. The default `ridging = FALSE` adds 0, not `0.0001`; that ridge is a numerical hack and is not this exact map. The scalar correlation is `ψ / ψ = 1` after strictly positive `MANIFESTTRAITVAR`. Form strictly positive `ψ` first, then `1 / √ψ`, then `(1 / √ψ) ψ (1 / √ψ)`. Unstandardised `MANIFESTTRAITVAR` is defined for a zero trait; standardised `MANIFESTTRAITVAR` is not. Zero `MANIFESTTRAITVAR` skips forming `MANIFESTTRAITVARstd` in the 2017-era source and fails closed here. Indicator-level trait variance is an event-time structural quantity, so a non-event clock fails closed. `MANIFESTTRAITVAR` does not require stable `a < 0`. Distinct positive `ψ` recover the same 1. `trait / trait = 1` is `TRAITVARstd` and recovers the same number and remains a distinct named quantity. `θ` is `MANIFESTVAR` and is measurement error, not this correlation. Meredith (1993) remains unread (web search 2026-08-27T14:20Z: Springer/Cambridge Core paywalled; Unpaywall historically `is_oa: false`; Springer `content/pdf` is an HTML stub). Mislevy (1991, *Psychometrika, 56*, 177–196) remains unread on the same terms (DOI `10.1007/bf02294457`). Still not a Kalman filter, not a matrix `expm`, not ESEM estimation, not DSEM, and not ctsem estimation.

crates/tepp_api/Cargo.toml

@@ -29,5 +29,11 @@ path = "src/bin/tepp_loopback.rs"
 test = false
 bench = false
 
+[[bin]]
+name = "tepp-export-get"
+path = "src/bin/tepp_export_get.rs"
+test = false
+bench = false
+
 [lints]
 workspace = true