diff --git a/research/README.md b/research/README.md
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+# Research Control Plane
+
+Deliberately small. This directory exists so that claims about test-driver can be
+falsified rather than accumulated. It is plain files — no CLI, no schema, no
+tooling — until there are enough readings to justify tooling.
+
+```
+research/
+├── hypotheses/   H-NNN — a claim with a falsification condition
+├── experiments/  E-NNN — a planned or executed test of a hypothesis
+├── findings/     F-NNNN — findings about test-driver itself
+├── concepts/     the Concept ↔ Implementation Fitness Map
+└── decisions/    pointers to decisions recorded in State Hub
+```
+
+## Identifier convention
+
+| Prefix | Scope | Example |
+|---|---|---|
+| `H-NNN` | Hypothesis | `H-001` |
+| `E-NNN` | Experiment | `E-001` |
+| `F-NNNN` | Framework Finding | `F-0001` |
+| `C-<slug>` | Concept in the fitness map | `C-actor-isolation` |
+| `D-NN` | Decision, scoped to its design note | `D-07` |
+| `TD-WP-NNNN-TNN` | Workplan task (State Hub) | `TD-WP-0002-T04` |
+
+Identifiers are stable and never reused. A rejected hypothesis keeps its number.
+
+## Hypothesis lifecycle
+
+```
+PROPOSED → EXPERIMENTING → SUPPORTED → PRACTICALLY_VALIDATED → ARCHITECTURAL
+                  └──────→ REJECTED
+```
+
+A hypothesis may be reopened if later evidence contradicts it. Reopening is
+recorded in the file, not by creating a new identifier.
+
+## Rules
+
+1. **Every hypothesis states what would falsify it**, in terms of an observable
+   outcome, before any experiment runs. A hypothesis with no falsification
+   condition is an opinion.
+2. **Concepts with no supporting evidence are marked as such**, not quietly
+   retained. The fitness map is expected to contain unsupported entries; hiding
+   them defeats its purpose.
+3. **Subtraction counts as progress.** A rejected hypothesis or a removed
+   abstraction is a result, not a setback.
diff --git a/research/concepts/fitness-map.md b/research/concepts/fitness-map.md
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+# Concept ↔ Implementation Fitness Map
+
+**Updated:** 2026-08-22 (TD-WP-0002-T03)
+
+Traces each important concept to the implementation, experiment and evidence that
+support it. **Unsupported entries are the point of this map** — a concept with no
+implementation and no evidence is not a gap to be embarrassed about, it is the
+current honest state, and hiding it defeats the map's purpose.
+
+Support levels follow `TestDriverImprovementLoop.md` §13:
+`C0 Idea` · `C1 Hypothesis` · `C2 Experimentally Supported` ·
+`C3 Practically Validated` · `C4 Architectural Invariant`
+
+## Current state
+
+At the time of writing there is **no implementation**, so no concept can honestly
+exceed `C1`. The initial classifications in §13 of the Improvement Loop
+(`Actor Isolation C2`, `Independent Oracles C2`) are corrected downward here: they
+were aspirational, not evidenced.
+
+| Concept | Level | Implementation | Experiment | Evidence | Open question |
+|---|---|---|---|---|---|
+| `C-use-case` | C1 | — (T04) | — | — | Is a use case expressible without leaking mechanics? |
+| `C-actor-isolation` | C1 | — (T04) | E-001 | — | Isolation is asserted by construction; unverified. |
+| `C-semantic-action` | C1 | — (T04) | E-001 | — | Does identity survive restructuring better than a recorded sequence? (H-001) |
+| `C-oracle-independence` | C1 | — (T04) | E-001, E-003 | — | Independence of components ≠ independence of belief. (H-004) |
+| `C-evidence-pack` | C1 | — (T04) | — | — | What is the minimum sufficient for replay? |
+| `C-observation-channel` | C1 | — (T05) | — | — | **D-07** — required of every system under test. Adoption cost unknown. |
+| `C-adaptation` | C1 | — (T08) | E-001 | — | (H-002) |
+| `C-classification` | C1 | — (T08) | E-001, E-003 | — | Decision table is total on paper; unexercised. |
+| `C-crystallization` | C1 | — (T09) | E-002 | — | (H-003) |
+| `C-intent-provenance` | C1 | — (T04) | E-003 | — | Constrains provenance, not quality. Accepted residual. |
+| `C-lineage` | C0 | — | — | — | Parent pointer only in the spike. |
+| `C-energy` | C0 | events only (T04) | — | — | Dormant by decision. (H-005) |
+| `C-temperature` | C0 | — | — | — | Deferred. No implementation planned in TD-WP-0002. |
+| `C-confidence` | C0 | — | — | — | Deferred. |
+| `C-campaign` | C0 | — | — | — | Deferred. |
+| `C-metabolism` | C0 | — | — | — | Deferred. Depends on C-energy. |
+| `C-retirement` | C0 | — | — | — | Deferred. Depends on C-energy. |
+| `C-security-mutation` | C1 | — | E-003 | — | Catalogue exists; no derivation mechanism. |
+
+## Orphan check
+
+**Conceptual orphans** — concepts with no planned implementation in `TD-WP-0002`:
+`C-temperature`, `C-confidence`, `C-campaign`, `C-metabolism`, `C-retirement`.
+
+All five are deferred *by explicit decision*, not oversight. They are the group
+most at risk of being built because they are easy and satisfying, and never
+validated. They are revisited at T10, where the question is not "when do we build
+these" but "does the evidence justify keeping them in the model at all".
+
+**Implementation orphans** — none yet; there is no implementation.
diff --git a/research/decisions/README.md b/research/decisions/README.md
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+# Decisions
+
+Decisions are recorded in State Hub (the durable store) and indexed here for
+offline readers. Design rationale lives in the corresponding `docs/` note; this
+file is a pointer table, not a second source of truth.
+
+| Ref | Title | Hub ID | Source |
+|---|---|---|---|
+| D-01 … D-07 | Stratified evidence and claim provenance as the basis for adaptation safety | `fef5213f-ce9b-44c2-b327-a0b0ba4b6270` | `docs/TestDriverClassificationDesign.md` |
diff --git a/research/experiments/E-001-mechanical-vs-defect.md b/research/experiments/E-001-mechanical-vs-defect.md
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+---
+id: E-001
+title: Mechanical recovery and defect discrimination over the labelled mutation set
+status: PLANNED
+hypotheses: [H-001, H-002, H-004]
+task: TD-WP-0002-T08
+created: "2026-08-22"
+---
+
+# E-001 — Mechanical recovery and defect discrimination
+
+## Design
+
+Run the same verification asset against every labelled lab mutation (T05),
+in two arms:
+
+- **arm A** — semantic action realized by the agentic driver;
+- **arm B** — a recorded selector-based sequence captured against the baseline,
+  built with the most robust selector strategy reasonably available.
+
+Arm B is the control for H-001 and must actually be run.
+
+## Outcomes recorded per run
+
+surface diff (S1) · postcondition met and surface used (S2) · oracle verdicts
+(S3) · classification emitted · claim/invariant diff (expected empty) ·
+tokens · wall time · retries.
+
+## Decision rules
+
+- **False Adaptation Rate > 0** → stop. H-004 falsified; redesign, do not tune.
+- Arm B recovery ≥ arm A recovery → H-001 falsified.
+- Recovery achieved with a non-empty claim diff → H-002 falsified *and* a
+  framework defect, since D-02 forbids the write path.
+
+## Status
+
+`PLANNED`. Blocked on T05 (lab) and T07 (agentic driver).
diff --git a/research/experiments/E-002-crystallization-fidelity.md b/research/experiments/E-002-crystallization-fidelity.md
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+---
+id: E-002
+title: Crystallization fidelity and cost
+status: PLANNED
+hypotheses: [H-003]
+task: TD-WP-0002-T09
+created: "2026-08-22"
+---
+
+# E-002 — Crystallization fidelity and cost
+
+## Design
+
+Run one agentic realization repeatedly against a stable lab version until
+realization is stable, crystallize it, then execute the descendant with no model
+involvement across every lab version the ancestor was run against.
+
+## Outcomes recorded
+
+Oracle set of descendant vs ancestor · verdict agreement per lab version ·
+execution cost ratio (tokens, wall time) · whether human authorship of assertions
+was required.
+
+## Decision rules
+
+- Descendant oracle set is not a superset of the ancestor's → H-003 falsified.
+- Any verdict disagreement on the same lab version → H-003 falsified.
+- Cost ratio ≥ 1 → thesis intact, product rationale is not. Record plainly rather
+  than quietly.
+
+## Status
+
+`PLANNED`. Blocked on T07.
diff --git a/research/experiments/E-003-surface-substitution-attack.md b/research/experiments/E-003-surface-substitution-attack.md
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+---
+id: E-003
+title: Deliberate attack on the adaptation safety boundary
+status: PLANNED
+hypotheses: [H-004]
+task: TD-WP-0002-T08
+created: "2026-08-22"
+---
+
+# E-003 — Deliberate attack on the adaptation safety boundary
+
+## Why this experiment exists separately
+
+E-001 measures whether the framework *happens to* stay safe over a labelled set.
+E-003 tries to *make it unsafe*. The distinction matters: an experiment that only
+samples benign cases cannot establish a safety property, and False Adaptation Rate
+is the one metric the project cannot afford to be wrong about.
+
+## Attack cases
+
+1. **Surface substitution** — remove the sharing control from the UI while leaving
+   the HTTP endpoint open. A driver that "recovers" by calling the API has routed
+   around the control. Must classify as a finding, never as recovery (D-05).
+2. **Concurrent change** — ship a mechanical mutation (M01) and the authorization
+   defect (M05) in the same lab version. Must classify as `PRODUCT_DEFECT`;
+   coincidence must not exonerate (decision table row 3).
+3. **Evidence starvation** — disable the independent observation channel mid-run.
+   Must yield `AMBIGUOUS`, never a pass and never an adaptation (row 7).
+4. **Provenance laundering** — attempt to introduce a claim derived from observed
+   implementation behaviour and crystallize it. Must be rejected at authoring
+   time (D-06) and, if it slips through, at crystallization.
+
+## Decision rule
+
+Any attack that succeeds is a stop-and-redesign signal for H-004, regardless of
+what E-001 reports.
+
+## Status
+
+`PLANNED`. Blocked on T05, T07, T08.
diff --git a/research/hypotheses/H-001-semantic-action-stability.md b/research/hypotheses/H-001-semantic-action-stability.md
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+---
+id: H-001
+title: Semantic Action Stability
+status: PROPOSED
+created: "2026-08-22"
+experiments: [E-001]
+concepts: [C-semantic-action]
+---
+
+# H-001 — Semantic Action Stability
+
+## Claim
+
+A semantic action survives implementation restructuring better than a recorded UI
+interaction sequence.
+
+## Falsification condition
+
+Across the labelled mechanical mutations in the lab (T05), a recorded interaction
+sequence survives **at least as many** mutations as the semantic action does.
+
+If mechanics-free identity buys no measurable durability, the central abstraction
+is decorative and `SemanticAction` should be reduced to a naming convention.
+
+## Measurement
+
+Mechanical Recovery Rate for each of two arms over the same mutation set:
+- **arm A** — semantic action realized by an agentic driver;
+- **arm B** — a recorded selector-based sequence captured against the baseline.
+
+Arm B is a genuine control and must be run, not assumed to fail.
+
+## Threats to validity
+
+The comparison is unfair if arm B is built naively — a brittle straw man makes
+H-001 trivially true and worthless. Arm B uses the most robust selector strategy
+reasonably available (roles, labels, test ids where the lab provides them).
+
+## Status log
+
+- 2026-08-22 `PROPOSED`. No evidence.
diff --git a/research/hypotheses/H-002-mechanical-adaptation.md b/research/hypotheses/H-002-mechanical-adaptation.md
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+---
+id: H-002
+title: Mechanical Adaptation
+status: PROPOSED
+created: "2026-08-22"
+experiments: [E-001]
+concepts: [C-adaptation]
+---
+
+# H-002 — Mechanical Adaptation
+
+## Claim
+
+An agentic driver can recover from a mechanical implementation change without
+modifying the semantics of the protected use case.
+
+## Falsification condition
+
+Either:
+- the driver fails to recover from a majority of labelled `MECHANICAL` mutations
+  (recovery is not achievable in practice); **or**
+- recovery is achieved only in runs where claims or invariants were altered
+  (recovery is achievable but not semantics-preserving).
+
+The second branch matters more than the first. A high recovery rate purchased by
+weakening assertions falsifies this hypothesis just as decisively as no recovery
+at all.
+
+## Measurement
+
+- Mechanical Recovery Rate over `MECHANICAL`-labelled mutations.
+- Claim/invariant diff per run — expected to be empty by construction
+  (`docs/TestDriverClassificationDesign.md` D-02). Any non-empty diff is both a
+  falsification signal **and** a framework defect, since no write path should exist.
+
+## Status log
+
+- 2026-08-22 `PROPOSED`. Design decision D-02 makes the second falsification
+  branch structurally unreachable; the measurement is retained anyway, as an
+  assertion that the architecture is what we believe it is.
diff --git a/research/hypotheses/H-003-crystallization.md b/research/hypotheses/H-003-crystallization.md
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+---
+id: H-003
+title: Crystallization
+status: PROPOSED
+created: "2026-08-22"
+experiments: [E-002]
+concepts: [C-crystallization]
+---
+
+# H-003 — Crystallization
+
+## Claim
+
+A sufficiently stable agentic execution can be converted into deterministic test
+code without losing relevant oracle coverage.
+
+## Falsification condition
+
+Any of:
+- the generated deterministic test cannot be produced without human authorship of
+  the assertions;
+- it drops one or more oracles present in the agentic ancestor;
+- it passes where the ancestor would have failed, or vice versa, on the same lab
+  version;
+- it costs no less to execute than the agentic ancestor.
+
+## Measurement
+
+- Crystallization success rate.
+- Oracle set of descendant vs ancestor — must be a superset or equal.
+- Verdict agreement between ancestor and descendant across lab versions.
+- Execution cost ratio (tokens, wall time) descendant : ancestor.
+
+## Note on the cost criterion
+
+The cost criterion is included deliberately. If crystallization preserves
+semantics but saves nothing, the thesis is intact but the product rationale is
+not — and that distinction should be visible in the record rather than discovered
+by a user.
+
+## Status log
+
+- 2026-08-22 `PROPOSED`. No evidence.
diff --git a/research/hypotheses/H-004-independent-judgment.md b/research/hypotheses/H-004-independent-judgment.md
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+---
+id: H-004
+title: Independent Judgment
+status: PROPOSED
+created: "2026-08-22"
+experiments: [E-001, E-003]
+concepts: [C-oracle-independence, C-intent-provenance]
+---
+
+# H-004 — Independent Judgment
+
+## Claim
+
+Separating actor execution from deterministic oracles reduces false-positive
+adaptation to defective behaviour.
+
+## Falsification condition
+
+The framework classifies any seeded `DEFECT`-labelled mutation as
+`MECHANICAL_ADAPTATION` — i.e. **False Adaptation Rate > 0** over the labelled set.
+
+This is the project's existential safety metric. A non-zero result is a
+stop-and-redesign signal, not a tuning exercise.
+
+## Measurement
+
+- False Adaptation Rate over `DEFECT`-labelled mutations. Target: exactly 0.
+- Classification precision/recall over the full labelled set.
+- Rate of `AMBIGUOUS` escalation — tracked as a cost, not as a failure. A system
+  that escalates everything is safe and useless.
+
+## Relationship to the design
+
+`docs/TestDriverClassificationDesign.md` argues that FAR = 0 follows
+architecturally from D-02 (claims are run inputs with no adaptation write path)
+rather than from classifier accuracy. This hypothesis therefore tests the
+**architecture**, not a model.
+
+The most plausible route to falsification is not a misclassification but
+**surface-substitution**: an actor routing around a broken authorization control
+via another surface and scoring as a successful recovery. D-05 exists to close
+that route; E-003 exists to attack it deliberately.
+
+## Status log
+
+- 2026-08-22 `PROPOSED`. No evidence.
diff --git a/research/hypotheses/H-005-verification-energy.md b/research/hypotheses/H-005-verification-energy.md
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+---
+id: H-005
+title: Verification Energy
+status: PROPOSED
+created: "2026-08-22"
+experiments: []
+concepts: [C-energy]
+---
+
+# H-005 — Verification Energy
+
+## Claim
+
+Historical evidence about defects caught, adaptations required, false positives
+and duplication can identify verification assets whose continued execution is
+more valuable than others.
+
+## Falsification condition
+
+Energy scores computed from event history fail to rank assets better than a
+trivial baseline (e.g. recency, or uniform priority) when predicting which assets
+subsequently catch a defect.
+
+## Why no experiment is planned yet
+
+**This hypothesis is not testable at the current scale and is deliberately
+dormant.** Validating it requires event history across many assets over months —
+history the spike will not accumulate. Implementing a scoring function now would
+produce a number that cannot be checked, which is worse than no number.
+
+`TD-WP-0002` therefore records **raw immutable `EnergyEvent`s from the first run**
+and implements no scoring, decay, or selection logic. Events cannot be
+reconstructed later; scores can always be computed later.
+
+This is the hypothesis most likely to be **cheaply built and never validated**,
+which is precisely why it is fenced off.
+
+## Status log
+
+- 2026-08-22 `PROPOSED`, dormant by decision. Event capture only.