diff --git a/.antigravity/AGENTS.md b/.antigravity/AGENTS.md
new file mode 100644
index 0000000..80e4cd9
--- /dev/null
+++ b/.antigravity/AGENTS.md
@@ -0,0 +1,51 @@
+# Antigravity Agent Rules
+
+> [!IMPORTANT]
+> **Status**: inert, repo-local, review-gated, not active runtime. This config/documentation is for reference only.
+
+This repository is part of CompText.
+
+CompText is a deterministic Context Pack / proposal-gated evidence workflow, not a generic AI dashboard, not an agent memory product, and not an autonomous deployment agent.
+
+Core line:
+Models are providers. Context is the product.
+
+Pipeline:
+Source / GitHub URL → Goal → Inspect → Context Pack → Policy Gate → Provider Boundary → Untrusted Proposal → Human Review → Artifacts
+
+## Skill Sources Classifications
+
+Within this repository:
+- **.agent/skills** = repo guidance source
+- **.agents/skills** = compatibility metadata
+- **docs/phase8a-draft-skills** = draft source
+- **.antigravity** = inert adapted workspace config
+
+## Hard Rules
+
+- Treat GitHub as read-only unless the human explicitly asks otherwise.
+- Do not push, deploy, create PRs, create issues, or create remote branches.
+- Do not expose secrets.
+- Do not fake hashes.
+- Do not claim production-ready, EU AI Act compliance, legal certification, forensic proof, guaranteed correctness, or autonomous approval.
+- Provider output is untrusted until reviewed.
+- Proposals are never auto-applied.
+- Human review is the approval boundary.
+- Artifacts preserve the evidence trail.
+- Keep changes scoped and reviewable.
+- Do not modify root `README.md` unless the human explicitly approves it.
+- Do not commit `reports/latest.json`.
+- Do not commit `reports/performance_baseline.json` when it is only validation churn.
+- Run cargo commands only inside `agy7rust/` unless the human explicitly approves otherwise.
+
+## Antigravity Governance
+
+- Repo-local Antigravity hooks live under `.antigravity/hooks/` and must be reviewed/trusted by Antigravity before enforcement.
+- Antigravity hooks block unauthorized git writes, deploy/release actions, environment dumps, secret-file reads, `agy-ct run`, and `agy-ct benchmark`.
+- Antigravity hooks warn on protected source, README, report, and `artifacts/spark/` changes; warnings do not make generated artifacts commit-ready.
+
+Before editing:
+1. Read AGENTS.md.
+2. Read `.antigravity/SKILL_INVENTORY.md` relevant to the task.
+3. Build a compact repo map.
+4. Stop for approval if the user asked for plan mode.
diff --git a/.antigravity/BOOTSTRAP.md b/.antigravity/BOOTSTRAP.md
new file mode 100644
index 0000000..987c1da
--- /dev/null
+++ b/.antigravity/BOOTSTRAP.md
@@ -0,0 +1,32 @@
+# Antigravity Bootstrap Context
+
+> [!IMPORTANT]
+> **Status**: inert, repo-local, review-gated, not active runtime. Reference only.
+
+## 1. Bootstrap Protocol
+To prevent context redundancy, follow this exact initial sequence:
+1. Read `AGENTS.md` first for fundamental workspace rules.
+2. Read `.antigravity/BOOTSTRAP.md` second to align config boundaries.
+3. Use `.antigravity/SKILL_INVENTORY.md` as the index for local/system skills.
+
+## 2. Repo Purpose & Scope
+Deterministic trace packaging, replay-sidecar validation, and SPARK-style context artifact rendering for CompText.
+
+## 3. Skill & Source Classifications
+- **.agent/skills**: Repo guidance source (15 guidelines).
+- **.agents/skills**: Compatibility metadata (9 legacy skill directories).
+- **docs/phase8a-draft-skills**: Draft global skill candidates / design source only.
+- **.antigravity**: Inert adapted workspace configuration directory.
+
+## 4. Environment & Safety Boundaries
+- **Hooks & Plugins**: Inert, repo-local, review-gated, not active runtime.
+- **MCP Status**: Disabled/Not active. Do not create `.mcp.json`.
+- **Claim Hygiene**: No production-ready, EU AI Act, legal, or official SPARK compatibility claims.
+- **Allowed Edit Zones**: `./.antigravity/` and `./docs/context/` only.
+- **Forbidden Edit Zones**: Rust sources (`./agy7rust/src/`), `README.md`, `.agent/skills/`, `.agents/skills/`, and `.codex/`.
+- **Hard Rules**: Treat GitHub as read-only. No commits, pushes, deploys, secrets, or `.env` dumps.
+
+## 5. Next Workflow Order
+1. Load startup parameters from `.antigravity/START_HERE.md`.
+2. Inspect `docs/context/COMPTEXT_SPARKCTL_CONTEXT_CAPSULE.md` for active project state.
+3. Formulate plans for user approval before proposing edits.
diff --git a/.antigravity/SKILL_INVENTORY.md b/.antigravity/SKILL_INVENTORY.md
new file mode 100644
index 0000000..3cf75f3
--- /dev/null
+++ b/.antigravity/SKILL_INVENTORY.md
@@ -0,0 +1,74 @@
+# Antigravity Skill Inventory
+
+> [!IMPORTANT]
+> **Status**: inert, repo-local, review-gated, not active runtime. This config/documentation is for reference only.
+
+This inventory provides a complete comparison and registry of the skill sources in the repository, mapped to Antigravity guidelines.
+
+## Skill Sources Classifications
+
+- **.agent/skills** = repo guidance source
+- **.agents/skills** = compatibility metadata
+- **docs/phase8a-draft-skills** = draft source
+- **.antigravity** = inert adapted workspace config
+
+---
+
+## 1. Repo Guidance Source (`.agent/skills/`)
+
+These 15 files represent local repository guidance guidelines:
+- `00_project_system.md`: Project system initialization guidelines.
+- `01_phase_gate.md`: Phase transition verification.
+- `02_rust_validation.md`: Cargo checks and testing protocols.
+- `03_artifact_validation.md`: Validation rules for generated assets.
+- `04_spark_context_layer.md`: Context pipeline documentation.
+- `05_claim_hygiene.md`: Claim constraints.
+- `06_git_handoff.md`: Handoff protocols.
+- `07_cli_surface.md`: Command surface rules.
+- `08_agentic_output_contract.md`: Code quality expectations.
+- `09_codex_desktop_governance.md` -> **09_antigravity_governance.md**: Hook rules and boundaries.
+- `09_phase6_implementation_gate.md`: Gate guidelines for Phase 6.
+- `10_generated_artifact_policy.md`: Generated output management rules.
+- `10_spark_evidence_review.md`: Evidence package checking instructions.
+- `11_comptext_validate.md`: Local validation commands execution guide.
+- `12_agent_handoff_profile.md`: Profile specifications for handoffs.
+
+---
+
+## 2. Compatibility Metadata (`.agents/skills/`)
+
+These 9 folders contain compatibility metadata (with `SKILL.md` files):
+- **comptext-governance**: Mapped to Antigravity workflow governance for CompText integrity.
+- **codex-role-workflows** -> **antigravity-role-workflows**: Guidelines for role orchestration.
+- **codex-token-saving** -> **antigravity-token-saving**: Strategies to minimize prompt size and trace context.
+- **pdf-extraction-contracts**: Structural rules for processing and validation of PDF files.
+- **reviewer-final-report**: Guidelines for creating evidence reports for human review.
+- **rust-canonical-artifacts**: Rules for generating serialized Rust structures.
+- **security-readonly-boundaries**: Enforcing read-only rules for source control and GitHub.
+- **spark-hackathon-alignment**: Specific prompt engineering and validation guides for the SPARK challenge.
+- **sparkctl-evidence-packet**: Structuring SPARK evidence packets for review gates.
+
+---
+
+## 3. Draft Source (`docs/phase8a-draft-skills/`)
+
+These 7 subdirectories contain draft global skill candidates for review only:
+- **comptext-operating-boundary**: Load governance and confirm boundaries before CompText work.
+- **comptext-context-pack-review**: Review deterministic, redacted, replayable Context Pack workflows.
+- **comptext-proposal-gate-review**: Review proposal schema, path safety, validation commands, and human gate before apply.
+- **comptext-provider-boundary**: Review dry-run-first provider boundaries, network deny-by-default, auth metadata redaction, and untrusted outputs.
+- **comptext-claim-hygiene**: Review docs and handoffs for unsupported assurance claims.
+- **comptext-artifact-hygiene**: Classify generated artifacts and commit candidates before staging or handoff.
+- **comptext-compact-handoff**: Produce concise phase handoffs with files, commands, validation, git state, risks, and next action.
+
+---
+
+## 4. System-Level Antigravity Skills
+
+The following core Antigravity capabilities are available to this assistant:
+- **kernel-dev**: Logic for Multimodal Graph VM and Bytecode Execution.
+- **replay-engine**: Kernel Record-Replay (KRR) and Determinism Logic.
+- **workflow-skill-creator**: Packages a completed workflow into a reusable Antigravity skill.
+- **uv**: Python package manager helper.
+- **Scientific Databases**: ensembl-database, pubchem-database, uniprot-database, gnomad-database, clinical-trials-database, etc.
+- **Literature Search**: literature-search-arxiv, literature-search-openalex, pubmed-database, etc.
diff --git a/.antigravity/START_HERE.md b/.antigravity/START_HERE.md
new file mode 100644
index 0000000..875e8d8
--- /dev/null
+++ b/.antigravity/START_HERE.md
@@ -0,0 +1,31 @@
+# Antigravity Start Here
+
+> [!IMPORTANT]
+> **Status**: inert, repo-local, review-gated, not active runtime. Reference only.
+
+## Prompt Template
+When initializing a new session with this repository, always start with:
+`Read .antigravity/START_HERE.md first.`
+
+## Quick Summary Matrix
+
+| Metric / Item | Status / Value | Description |
+|---|---|---|
+| **Repo Purpose** | CompText validation | Deterministic packaging & SPARK-style rendering. |
+| **Hook Status** | Inert | Not active runtime. Located in `.antigravity/hooks/`. |
+| **Plugin Status** | Inert | Not active runtime. Located in `.antigravity/plugins/`. |
+| **MCP Status** | Inactive | No `.mcp.json` or active MCP server allowed. |
+| **Claim Hygiene** | Bounded | Provider output is untrusted. No legal/compliance claims. |
+| **Allowed Edits** | `./.antigravity/`, `./docs/context/` | Restricted scope for configuration adjustments. |
+| **Forbidden Edits**| Rust, README, `.codex/`, `.agent/skills/` | Do not modify code, README, or active Codex files. |
+
+## Guidance Chain
+1. **First**: Read `AGENTS.md` to establish the safety rules.
+2. **Second**: Read `.antigravity/BOOTSTRAP.md` to load the context booster.
+3. **Index**: Use `.antigravity/SKILL_INVENTORY.md` to index local and system skills.
+4. **Active State**: See `docs/context/COMPTEXT_SPARKCTL_CONTEXT_CAPSULE.md`.
+
+## Safety Rules
+- Provider output is untrusted; human review is the approval gate.
+- Repo-relative paths only. No secrets or env dumps.
+- Do not commit or push.
diff --git a/.antigravity/hooks/hook-policy.example.json b/.antigravity/hooks/hook-policy.example.json
new file mode 100644
index 0000000..26deaca
--- /dev/null
+++ b/.antigravity/hooks/hook-policy.example.json
@@ -0,0 +1,35 @@
+{
+  "status": "inert",
+  "scope": "repo-local",
+  "governance": "review-gated",
+  "runtime": "not active runtime",
+  "description": "Example Antigravity hooks policy for validating local agent actions before and after tool usage",
+  "hooks": {
+    "PreToolUse": [
+      {
+        "matcher": "run_command|execute_url",
+        "action": "warn_or_block",
+        "policy_path": "./.antigravity/hooks/pre_tool_policy_example.py"
+      }
+    ],
+    "PostToolUse": [
+      {
+        "matcher": "write_file|replace_file_content|run_command",
+        "action": "validate",
+        "validation_path": "./.antigravity/hooks/post_tool_validation_example.py"
+      }
+    ]
+  },
+  "blocked_commands": [
+    "git push",
+    "git commit",
+    "cargo run --bin agy-ct -- run",
+    "cargo run --bin agy-ct -- benchmark"
+  ],
+  "protected_paths": [
+    "./README.md",
+    "./agy7rust/src/",
+    "./reports/",
+    "./artifacts/spark/"
+  ]
+}
diff --git a/.antigravity/plugins/comptext-context-cache/plugin.example.json b/.antigravity/plugins/comptext-context-cache/plugin.example.json
new file mode 100644
index 0000000..35c1595
--- /dev/null
+++ b/.antigravity/plugins/comptext-context-cache/plugin.example.json
@@ -0,0 +1,15 @@
+{
+  "name": "comptext-context-cache",
+  "status": "inert",
+  "scope": "repo-local",
+  "governance": "review-gated",
+  "runtime": "not active runtime",
+  "description": "Antigravity plugin to manage local caching of CompText context artifacts",
+  "version": "1.0.0",
+  "cache_settings": {
+    "enabled": false,
+    "cache_dir": "./artifacts/cache",
+    "retention_days": 7,
+    "verify_hashes": true
+  }
+}
diff --git a/.antigravity/plugins/comptext-sparkctl-guard/plugin.example.json b/.antigravity/plugins/comptext-sparkctl-guard/plugin.example.json
new file mode 100644
index 0000000..a333ff0
--- /dev/null
+++ b/.antigravity/plugins/comptext-sparkctl-guard/plugin.example.json
@@ -0,0 +1,20 @@
+{
+  "name": "comptext-sparkctl-guard",
+  "status": "inert",
+  "scope": "repo-local",
+  "governance": "review-gated",
+  "runtime": "not active runtime",
+  "description": "Antigravity plugin protecting CompText boundaries and ensuring human review validation",
+  "version": "1.0.0",
+  "rules": {
+    "block_remote_writes": true,
+    "require_human_review": true,
+    "untrusted_provider_output": true,
+    "repo_relative_paths_only": true
+  },
+  "monitored_paths": [
+    "./agy7rust/src/",
+    "./reports/",
+    "./artifacts/spark/"
+  ]
+}
diff --git a/.antigravity/settings.comptext-sparkctl.json b/.antigravity/settings.comptext-sparkctl.json
new file mode 100644
index 0000000..c535450
--- /dev/null
+++ b/.antigravity/settings.comptext-sparkctl.json
@@ -0,0 +1,24 @@
+{
+  "status": "inert",
+  "scope": "repo-local",
+  "governance": "review-gated",
+  "runtime": "not active runtime",
+  "project": {
+    "name": "comptext-sparkctl",
+    "root_dir": "./",
+    "rust_dir": "./agy7rust"
+  },
+  "antigravity": {
+    "skills_dir": "./.agents/skills",
+    "hooks_dir": "./.antigravity/hooks",
+    "plugins_dir": "./.antigravity/plugins"
+  },
+  "safety_rules": {
+    "provider_output_untrusted": true,
+    "human_review_required": true,
+    "repo_relative_only": true,
+    "allow_push": false,
+    "allow_deploy": false,
+    "expose_secrets": false
+  }
+}
diff --git a/README.md b/README.md
index 0ea6c6f..ab36835 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,8 @@ cargo run --bin sparkctl -- doctor
 cargo run --bin sparkctl -- rust-validate
 cargo run --bin sparkctl -- context-all
 cargo run --bin sparkctl -- spark-demo
+cargo run --bin sparkctl -- spark-evidence-demo --output <path>
+cargo run --bin sparkctl -- spark-evidence-validate --input <path>
 cargo run --bin sparkctl -- handoff-check
 ```
 
@@ -65,6 +67,8 @@ Validated command responsibilities:
 - `sparkctl rust-validate` runs local Rust quality checks.
 - `sparkctl context-all` runs the local context build/render/validate sequence.
 - `sparkctl spark-demo` runs the local end-to-end demonstration flow.
+- `sparkctl spark-evidence-demo` writes a deterministic SPARK Evidence Packet v1 demo envelope.
+- `sparkctl spark-evidence-validate` validates a SPARK Evidence Packet v1 envelope.
 - `sparkctl handoff-check` checks local repository handoff readiness.
 
 ### `agy-ct`
@@ -91,7 +95,7 @@ Current wrapper mapping:
 | `agy-ct demo` | `sparkctl::spark_demo::run_spark_demo()` |
 | `agy-ct context all` | `sparkctl::context_all::run_context_all()` |
 
-Other `agy-ct` commands remain explicit placeholders until their implementation phase is approved.
+Other `agy-ct` commands remain scaffolded placeholders until their implementation phase is approved.
 
 ---
 
@@ -108,8 +112,8 @@ These artifacts are intended for local, reproducible validation and review workf
 ### Demo Evidence
 
 Demo evidence:
-- SPARK challenge demo evidence: [DEMO_SPARK_EVIDENCE.md](file:///C:/Users/contr/sandbox_workspace/Antigravity-Comptextv7-unified/git_post_push_verification/repo/DEMO_SPARK_EVIDENCE.md)
-- Local performance baseline: [PERFORMANCE_BASELINE.md](file:///C:/Users/contr/sandbox_workspace/Antigravity-Comptextv7-unified/git_post_push_verification/repo/PERFORMANCE_BASELINE.md)
+- SPARK challenge demo evidence: [DEMO_SPARK_EVIDENCE.md](DEMO_SPARK_EVIDENCE.md)
+- Local performance baseline: [PERFORMANCE_BASELINE.md](PERFORMANCE_BASELINE.md)
 
 #### Reviewer Quickstart
 
diff --git a/docs/context/ACTIVE_WORK_LEDGER.md b/docs/context/ACTIVE_WORK_LEDGER.md
new file mode 100644
index 0000000..633eb42
--- /dev/null
+++ b/docs/context/ACTIVE_WORK_LEDGER.md
@@ -0,0 +1,24 @@
+# Active Work Ledger
+
+> [!IMPORTANT]
+> **Status**: inert, repo-local, review-gated, not active runtime. This ledger is for local reference and documentation only.
+
+This ledger tracks active work items, task mappings, and status checkpoints for the CompText-Sparkctl project.
+
+## Active Task Inventory
+
+1. **Antigravity Mapping Configuration**:
+   - Mapping Codex concepts to Antigravity. (Status: Done)
+   - Configuration files created under `./.antigravity/`. (Status: Done)
+   - Migration and claim ledgers created under `./docs/context/`. (Status: Done)
+
+2. **Compliance / Verification Gate**:
+   - Ensure all provider outputs are treated as untrusted proposals.
+   - Maintain the human review approval gate before modifying any source tree.
+   - Restrict all actions to repo-relative paths only.
+
+## Local Environment Integrity
+
+- **Active Runtime**: None (hooks and plugins are example files and not actively running).
+- **GitHub / Remote Writes**: Blocked (read-only mode is active).
+- **Environment and Secret Isolation**: No secrets, `.env`, or credential tokens are read or referenced.
diff --git a/docs/context/ANTIGRAVITY_MIGRATION_LEDGER.md b/docs/context/ANTIGRAVITY_MIGRATION_LEDGER.md
new file mode 100644
index 0000000..dfb6506
--- /dev/null
+++ b/docs/context/ANTIGRAVITY_MIGRATION_LEDGER.md
@@ -0,0 +1,33 @@
+# Antigravity Migration Ledger
+
+> [!IMPORTANT]
+> **Status**: inert, repo-local, review-gated, not active runtime. This ledger is for local reference and documentation only.
+
+This file documents the conceptual mapping and legacy source classifications between Codex and Antigravity for the CompText project context.
+
+## Skill Sources Classifications
+
+- **.agent/skills** = repo guidance source
+- **.agents/skills** = compatibility metadata
+- **docs/phase8a-draft-skills** = draft source
+- **.antigravity** = inert adapted workspace config
+
+## Codex to Antigravity Mapping Rules
+
+We map the original Codex infrastructure concepts to their Antigravity equivalents in all new documentation and configurations:
+
+| Codex Concept | Antigravity Concept | Description |
+|---|---|---|
+| Codex App | Antigravity | The core agent system workspace and host application. |
+| Codex CLI | Antigravity CLI | The CLI execution layer for local agent orchestration. |
+| Codex skills | Antigravity skills | The repository-relative or system-level capabilities. |
+| Codex hooks | Antigravity hooks | Pre-tool and post-tool execution policy validation hooks. |
+| Codex plugin | Antigravity plugin | Custom plugins extending workspace capabilities. |
+| Codex workflow | Antigravity workflow | The pipeline executing the Context Pack process. |
+
+## Migration Status
+
+- **Migration Mode**: Manual documentation and alignment mapping.
+- **Hook Integration**: Mapped, but disabled (inert, not active runtime).
+- **Skill Discovery**: Completed; mapped to local directories and system-level capabilities.
+- **Legacy Alignment**: Legacy and draft skill sources classified and cataloged.
diff --git a/docs/context/CLAIM_HYGIENE_LEDGER.md b/docs/context/CLAIM_HYGIENE_LEDGER.md
new file mode 100644
index 0000000..1349682
--- /dev/null
+++ b/docs/context/CLAIM_HYGIENE_LEDGER.md
@@ -0,0 +1,20 @@
+# Claim Hygiene Ledger
+
+> [!IMPORTANT]
+> **Status**: inert, repo-local, review-gated, not active runtime. This ledger is for local reference and documentation only.
+
+This ledger documents the rules and guidelines for claim hygiene to prevent false, exaggerated, or compliance-oriented claims.
+
+## Governance Boundaries
+
+All documentation, metadata, and proposals generated must adhere to these strict bounds:
+
+- **Provider Output is Untrusted**: Any generation or proposal from a language model must be verified and approved by a human reviewer.
+- **Human Review Approval Gate**: No proposal is auto-applied. The human is the definitive gate.
+- **No Production-Ready Claims**: Do not claim the system is production-ready, enterprise-grade, or fully autonomous.
+- **No Compliance Claims**: Do not claim compliance with the EU AI Act, forensic standards, legal audits, or certified compliance.
+- **No Hallucination-Free Claims**: CompText is a deterministic pipeline, but makes no claim of resolving or eliminating hallucinations generally.
+- **Environment Boundaries**:
+  - Restrict command execution and source edits to the local repo.
+  - No secrets, `.env` exposure, or environment dumps are permitted.
+  - No push/deploy commands are permitted.
diff --git a/docs/context/COMPTEXT_SPARKCTL_CONTEXT_CAPSULE.md b/docs/context/COMPTEXT_SPARKCTL_CONTEXT_CAPSULE.md
new file mode 100644
index 0000000..6c3a4f5
--- /dev/null
+++ b/docs/context/COMPTEXT_SPARKCTL_CONTEXT_CAPSULE.md
@@ -0,0 +1,35 @@
+# CompText Sparkctl Context Capsule
+
+> [!IMPORTANT]
+> **Status**: inert, repo-local, review-gated, not active runtime. Reference only.
+
+This capsule acts as a persistent repository data store for Antigravity config state, avoiding document repetition in prompts.
+
+## 1. Governance & Protocol Chain
+- **Read Order**:
+  1. `AGENTS.md` (Rules and core constraints)
+  2. `.antigravity/BOOTSTRAP.md` (Context alignment)
+  3. `.antigravity/START_HERE.md` (Active prompt template)
+- **Index**: Reference `.antigravity/SKILL_INVENTORY.md` for local and system capabilities.
+
+## 2. Skill Source Classifications
+- `.agent/skills/` = repo guidance source
+- `.agents/skills/` = compatibility metadata
+- `docs/phase8a-draft-skills/` = draft source / design reference only
+- `.antigravity/` = inert adapted workspace config
+
+## 3. Project Configuration Matrix
+- **Purpose**: Local packaging, validation, and metadata generation for CompText.
+- **Hook Status**: Inert (no active runtime) example configs.
+- **Plugin Status**: Inert (no active runtime) example configs.
+- **MCP Status**: Inactive (no MCP configurations or servers).
+- **Claim Hygiene**: Strict adherence to no production-ready, legal, compliance, or official SPARK claims. Provider output is untrusted and human review is the gate.
+- **Edit Isolation**:
+  - *Allowed*: `./.antigravity/` and `./docs/context/`.
+  - *Forbidden*: `./agy7rust/src/` (Rust source), `./README.md`, `./.agent/skills/`, `./.agents/skills/`, and `./.codex/`.
+- **Handoff Rules**: All paths must be repo-relative. No secrets, `.env` files, git pushes, or deployments.
+
+## 4. Next Workflow Order
+1. Apply the prompt prefix: `"Read .antigravity/START_HERE.md first."`
+2. Follow the bootstrap and inventory files for contextual queries.
+3. Obtain user approval before proposing changes to any workspace configs.