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DavidQ
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Lock runtime contract with hard fail guards - PR 11.137
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Lines changed: 197 additions & 33 deletions

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‎docs/dev/codex_commands.md‎

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TASK:
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1. Search for prohibited patterns:
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normalize*, transform*, convert*, infer*,
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tryLoadPreset*, buildPreset*, default*, fallback*
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1. Add validateInput(payloadJson, paletteJson)
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2. Remove any remaining occurrences affecting input paths
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2. Add checks:
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- missing payload → error
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- wrapper detected → error
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- parent JSON detected → error
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- mutation detected → error
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- fallback attempt → error
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3. Verify launch signature:
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launch(toolId, payloadJson, paletteJson?)
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3. Inject before tool launch
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4. Verify:
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- payloadJson unchanged
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- paletteJson unchanged
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- no global reads
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5. Ensure missing input => error (no fallback)
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4. TEST:
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invalid inputs → must fail
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valid input → pass
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REPORT:
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docs/dev/reports/final_verification_11_136.txt
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docs/dev/reports/runtime_contract_lock_11_137.txt
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FAIL if any violation remains
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FAIL if invalid inputs succeed

‎docs/dev/commit_comment.txt‎

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Final verification: no fallback, no global, zero-transform routing - PR 11.136
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Lock runtime contract with hard fail guards - PR 11.137

‎docs/dev/reports/runtime_contract_lock_11_137.txt‎

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Runtime Contract Lock Report: 11_137
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Date: 2026-04-30
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Repo: C:/Users/davidq/Documents/GitHub/HTML-JavaScript-Gaming
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Mode: STRICT SCOPE
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Scope
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- Routing files only
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Files Modified
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- tools/shared/toolHostRuntime.js
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- docs/dev/reports/runtime_contract_lock_11_137.txt
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Task Execution
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1) Added runtime validator
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- Added `validateInput(payloadJson, paletteJson)` in `tools/shared/toolHostRuntime.js`.
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- Injected call immediately before tool lookup/launch path execution inside:
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- `launch(toolId, payloadJson, paletteJson = null)`
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2) Enforced required checks
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- missing payload => error
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- `launch contract violation: missing payloadJson object.`
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- wrapper detected => error
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- detects wrapper keys/shapes (`payloadJson`, `paletteJson`, wrapper container forms)
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- parent JSON detected => error
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- rejects workspace/parent JSON signatures
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- mutation detected => error
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- compares pre/post JSON fingerprints during validation and throws on change
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- fallback attempt => error
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- rejects keys prefixed by `default*`, `fallback*`, `tryLoadPreset*`, `buildPreset*`
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3) Launch signature status
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- Verified unchanged signature:
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- `launch(toolId, payloadJson, paletteJson?)`
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4) Runtime test results
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- PASS invalid_missing_payload (failed as expected)
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- PASS invalid_wrapper_json (failed as expected)
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- PASS invalid_parent_json (failed as expected)
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- PASS invalid_fallback_attempt (failed as expected)
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- PASS invalid_mutation_detected (failed as expected)
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- PASS valid_input (passed)
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5) Syntax validation
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- `node --check tools/shared/toolHostRuntime.js` => PASS
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Result
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- PASS
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- Invalid inputs fail, valid direct input passes, and validation gate is enforced before tool launch.

‎docs/pr/BUILD_PR_LEVEL_11_137_LOCK_RUNTIME_CONTRACT.md‎

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# BUILD_PR_LEVEL_11_137_LOCK_RUNTIME_CONTRACT
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## Purpose
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Lock the runtime so ANY violation of the JSON-only contract immediately fails execution.
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## STRICT SCOPE
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ALLOWED FILES:
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- routing files
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- tool launch handlers
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ALLOWED CHANGES:
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- add hard fail conditions only
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- no behavior expansion
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## LOCK RULES
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System MUST fail if:
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1. payloadJson is missing
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2. paletteJson required but missing
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3. payload mutated
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4. palette mutated
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5. wrapper detected
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6. parent JSON detected
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7. global read detected
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8. fallback attempted
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## REQUIRED IMPLEMENTATION
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Add guard layer BEFORE tool execution:
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validateInput(payloadJson, paletteJson)
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Checks:
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- typeof payload === object
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- schema matches expected tool schema
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- no extra wrapper keys
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- no reference to parent structures
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## VALIDATION
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- simulate invalid cases → MUST throw error
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- simulate valid case → MUST pass
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## REPORT
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docs/dev/reports/runtime_contract_lock_11_137.txt:
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- guards added
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- violations caught
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- test cases
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## FAILURE
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FAIL if:
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- any invalid input still runs

‎tools/shared/toolHostRuntime.js‎

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@@ -43,31 +43,93 @@ function hasImplicitGlobalKey(value) {
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return Object.keys(value).some((key) => blockedKeys.has(String(key).trim().toLowerCase()));
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}
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function assertExplicitLaunchInputs({ toolId = "", payloadJson = null, paletteJson = null, argumentCount = 0 }) {
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const toolIdText = typeof toolId === "string" ? toolId.trim() : "";
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if (!toolIdText) {
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throw new Error("launch contract violation: toolId is required.");
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function isWrapperJsonLike(value) {
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if (!isPlainObject(value)) {
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return false;
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}
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if (argumentCount < 2 || argumentCount > 3) {
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throw new Error(`launch contract violation: launch(toolId, payloadJson, paletteJson?) expected 2-3 args, received ${argumentCount}.`);
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const keys = Object.keys(value).map((key) => String(key).trim().toLowerCase());
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if (keys.includes("payloadjson") || keys.includes("palettejson")) {
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return true;
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}
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if (keys.includes("wrapper") || keys.includes("wrapped")) {
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return true;
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}
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if (keys.includes("payload") && isPlainObject(value.payload)) {
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return true;
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}
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if (keys.includes("palette") && isPlainObject(value.palette)) {
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return true;
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}
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return false;
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}
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function hasFallbackAttempt(value) {
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const blockedPrefixes = ["default", "fallback", "tryloadpreset", "buildpreset"];
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const stack = [value];
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while (stack.length > 0) {
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const node = stack.pop();
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if (!isPlainObject(node) && !Array.isArray(node)) {
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continue;
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}
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if (Array.isArray(node)) {
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node.forEach((entry) => stack.push(entry));
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continue;
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}
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Object.entries(node).forEach(([key, nestedValue]) => {
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const normalized = String(key).trim().toLowerCase();
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if (blockedPrefixes.some((prefix) => normalized.startsWith(prefix))) {
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throw new Error("launch contract violation: fallback attempt detected in input JSON.");
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}
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stack.push(nestedValue);
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});
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}
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return false;
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}
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function computeInputFingerprint(value, label) {
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try {
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return JSON.stringify(value);
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} catch {
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throw new Error(`launch contract violation: ${label} must be JSON-serializable.`);
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}
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}
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export function validateInput(payloadJson, paletteJson = null) {
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const payloadBefore = computeInputFingerprint(payloadJson, "payloadJson");
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const paletteBefore = paletteJson === null ? null : computeInputFingerprint(paletteJson, "paletteJson");
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if (!isPlainObject(payloadJson)) {
55-
throw new Error(`launch contract violation: payloadJson must be an object for ${toolIdText}.`);
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throw new Error("launch contract violation: missing payloadJson object.");
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}
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if (paletteJson !== null && !isPlainObject(paletteJson)) {
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throw new Error(`launch contract violation: paletteJson must be an object or null for ${toolIdText}.`);
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throw new Error("launch contract violation: paletteJson must be an object or null.");
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}
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if (isWrapperJsonLike(payloadJson) || (paletteJson !== null && isWrapperJsonLike(paletteJson))) {
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throw new Error("launch contract violation: wrapper JSON detected.");
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}
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if (isParentJsonLike(payloadJson)) {
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throw new Error(`launch contract violation: parent JSON usage detected in payloadJson for ${toolIdText}.`);
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if (isParentJsonLike(payloadJson) || (paletteJson !== null && isParentJsonLike(paletteJson))) {
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throw new Error("launch contract violation: parent JSON detected.");
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}
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if (paletteJson !== null && isParentJsonLike(paletteJson)) {
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throw new Error(`launch contract violation: parent JSON usage detected in paletteJson for ${toolIdText}.`);
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if (hasImplicitGlobalKey(payloadJson) || (paletteJson !== null && hasImplicitGlobalKey(paletteJson))) {
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throw new Error("launch contract violation: implicit/global input keys detected.");
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}
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if (hasImplicitGlobalKey(payloadJson)) {
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throw new Error(`launch contract violation: implicit/global input keys detected in payloadJson for ${toolIdText}.`);
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hasFallbackAttempt(payloadJson);
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if (paletteJson !== null) {
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hasFallbackAttempt(paletteJson);
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}
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if (paletteJson !== null && hasImplicitGlobalKey(paletteJson)) {
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throw new Error(`launch contract violation: implicit/global input keys detected in paletteJson for ${toolIdText}.`);
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const payloadAfter = computeInputFingerprint(payloadJson, "payloadJson");
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const paletteAfter = paletteJson === null ? null : computeInputFingerprint(paletteJson, "paletteJson");
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if (payloadBefore !== payloadAfter || paletteBefore !== paletteAfter) {
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throw new Error("launch contract violation: mutation detected during input validation.");
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}
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}
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function assertExplicitLaunchInputs({ toolId = "", argumentCount = 0 }) {
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const toolIdText = typeof toolId === "string" ? toolId.trim() : "";
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if (!toolIdText) {
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throw new Error("launch contract violation: toolId is required.");
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}
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if (argumentCount < 2 || argumentCount > 3) {
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throw new Error(`launch contract violation: launch(toolId, payloadJson, paletteJson?) expected 2-3 args, received ${argumentCount}.`);
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}
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}
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@@ -211,10 +273,9 @@ export function createToolHostRuntime(options = {}) {
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assertExplicitLaunchInputs({
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toolId,
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payloadJson,
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paletteJson,
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argumentCount: arguments.length
217277
});
278+
validateInput(payloadJson, paletteJson);
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const toolIdText = typeof toolId === "string" ? toolId.trim() : "";
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const toolEntry = getToolHostEntryById(manifest, toolIdText);
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if (!toolEntry) {

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