feat(analysis): bind topic activity/dormancy/reactivation to an analysis-run profile

CHANGELOG.md

@@ -38,6 +38,8 @@ All notable changes to TEPP are documented here. The format follows Keep a Chang
 
 ## [Unreleased]
 
+- **Topic activity analysis-run profile**: cutoff-safe `topic_activity_v1` binds `topic_lineage` dormancy/reactivation and remint refusal (`analysis_engine`). Reactivation is not a new topic; not birth/split/merge and not implemented-main.
+
 - `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/analysis_engine/Cargo.toml

@@ -20,6 +20,7 @@ serde_json = { workspace = true }
 sha2 = { workspace = true }
 tepp_api = { path = "../tepp_api", version = "0.2.0" }
 temporal_core = { path = "../temporal_core", version = "0.2.0" }
+topic_lineage = { path = "../topic_lineage", version = "0.2.0" }
 topic_measurement = { path = "../topic_measurement", version = "0.2.0" }
 uuid.workspace = true
 

crates/analysis_engine/src/lib.rs

@@ -8,10 +8,12 @@
 //! through [`tepp_api`]. It deliberately does not claim latent-variable or topic
 //! estimation authority; those estimators remain separate scientific crates.
 //! estimation authority; it invokes estimators through their scientific crate
-//! contracts and preserves their artifact meaning.
+//! contracts and preserves their artifact meaning. Topic activity composition
+//! invokes [`topic_lineage`] and cannot mint a new identity on reactivation.
 
 mod case_deletion_refit;
 mod lineage_criterion;
+mod topic_activity_artifact;
 mod topic_context_posterior;
 mod topic_lineage_artifact;
 
@@ -25,6 +27,7 @@ use tepp_api::{
     AnalysisResultSummary, AnalysisRunAccepted, AnalysisRunRequest, AnalysisRunTerminalResult,
     ApiError,
 };
+use topic_lineage::TopicLineageError;
 use topic_measurement::TopicMeasurementError;
 
 /// One document admitted to exhaustive case-deletion fitting.
@@ -46,12 +49,21 @@ pub use lineage_criterion::{
     LineageCriterionFit, LineageCriterionFitError, LineageCriterionObservation,
     fit_lineage_criterion_posteriors,
 };
+/// Topic-activity artifact and execution contracts from this engine.
+pub use topic_activity_artifact::{
+    TOPIC_ACTIVITY_ARTIFACT_BYTE_LIMIT, TOPIC_ACTIVITY_ARTIFACT_SCHEMA_VERSION,
+    TOPIC_ACTIVITY_MODEL_CONTRACT_VERSION, TOPIC_ACTIVITY_OUTPUT_PROFILE, TopicActivityArtifact,
+    TopicActivityExecution, TopicActivityInput, TopicActivityTransition,
+    execute_topic_activity_run,
+};
 /// Bounded posterior topic-context producer contract and record types.
 pub use topic_context_posterior::{
     TOPIC_CONTEXT_POSTERIOR_BYTE_LIMIT, TOPIC_CONTEXT_POSTERIOR_SCHEMA_VERSION,
     TopicActivityInterval, TopicContextMembership, TopicContextPosteriorArtifact,
     TopicDocumentRelation, TopicLineageEvent, TopicPostPlausibleValue,
 };
+/// Durable topic identity used by topic-activity composition.
+pub use topic_lineage::TopicIdentity;
 /// Topic-lineage artifact and execution contracts from this engine.
 pub use topic_lineage_artifact::{
     TOPIC_LINEAGE_ARTIFACT_BYTE_LIMIT, TOPIC_LINEAGE_ARTIFACT_SCHEMA_VERSION,
@@ -248,6 +260,10 @@ pub enum AnalysisEngineError {
     TopicMeasurement(TopicMeasurementError),
     /// A topic-lineage artifact violated its bounded schema or count invariants.
     InvalidTopicLineageArtifact,
+    /// Topic activity/dormancy/reactivation refused the offered sequence.
+    TopicActivity(TopicLineageError),
+    /// A topic-activity artifact violated its bounded schema or claim boundary.
+    InvalidTopicActivityArtifact,
 }
 
 impl fmt::Display for AnalysisEngineError {
@@ -262,6 +278,8 @@ impl fmt::Display for AnalysisEngineError {
             Self::LimitExceeded => "analysis corpus exceeded its execution bound",
             Self::TopicMeasurement(error) => return error.fmt(formatter),
             Self::InvalidTopicLineageArtifact => "invalid topic lineage artifact",
+            Self::TopicActivity(error) => return error.fmt(formatter),
+            Self::InvalidTopicActivityArtifact => "invalid topic activity artifact",
         };
         formatter.write_str(message)
     }
@@ -281,6 +299,12 @@ impl From<TopicMeasurementError> for AnalysisEngineError {
     }
 }
 
+impl From<TopicLineageError> for AnalysisEngineError {
+    fn from(error: TopicLineageError) -> Self {
+        Self::TopicActivity(error)
+    }
+}
+
 /// Execute the cutoff-safe temporal evidence readiness analysis.
 ///
 /// Evidence whose `available_time` is later than the request cutoff is excluded
@@ -413,7 +437,8 @@ mod tests {
     use super::{
         ANALYSIS_ARTIFACT_SCHEMA_VERSION, ANALYSIS_STATISTIC_COUNT, AnalysisCorpus,
         AnalysisEngineError, AnalysisEvidenceUnit, MAX_ANALYSIS_IDENTIFIER_BYTES,
-        MAX_EVIDENCE_UNITS, TopicMeasurementError, add_membership_count, execute_analysis_run,
+        MAX_EVIDENCE_UNITS, TopicLineageError, TopicMeasurementError, add_membership_count,
+        execute_analysis_run,
     };
     use temporal_core::{AvailableTime, EventTime};
     use tepp_api::{AnalysisRunAccepted, AnalysisRunRequest, AnalysisRunTerminalState, ApiError};
@@ -681,6 +706,14 @@ mod tests {
                 AnalysisEngineError::InvalidTopicLineageArtifact,
                 "invalid topic lineage artifact",
             ),
+            (
+                AnalysisEngineError::InvalidTopicActivityArtifact,
+                "invalid topic activity artifact",
+            ),
+            (
+                AnalysisEngineError::TopicActivity(TopicLineageError::ReactivationIsNotNewTopic),
+                "reactivation is not a new topic",
+            ),
         ];
         for (error, message) in messages {
             assert_eq!(error.to_string(), message);
@@ -689,6 +722,12 @@ mod tests {
         assert_eq!(converted.to_string(), "invalid API wire payload");
         let from_topic: AnalysisEngineError = TopicMeasurementError::DidNotConverge.into();
         assert_eq!(from_topic.to_string(), "topic estimator did not converge");
+        let from_activity: AnalysisEngineError =
+            TopicLineageError::InvalidActivityTransition.into();
+        assert_eq!(
+            from_activity.to_string(),
+            "invalid topic activity transition"
+        );
         assert_eq!(
             add_membership_count(u64::MAX, 1),
             Err(AnalysisEngineError::ArithmeticOverflow)