feat(memory): add Agent Reflection Engine for cross-session learning#565
feat(memory): add Agent Reflection Engine for cross-session learning#565nikolasdehor wants to merge 3 commits intoSynkraAI:mainfrom
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WalkthroughAdds a new ReflectionEngine module for recording, persisting, and reasoning over agent task reflections; updates three modules to destructure Changes
Sequence Diagram(s)sequenceDiagram
actor Task as Task
participant RE as ReflectionEngine
participant Disk as DiskStorage
participant Pattern as PatternDetector
participant Rec as Recommender
Task->>RE: recordReflection(reflection)
RE->>RE: validate & assign id
RE->>Disk: save reflections.json
Disk-->>RE: persisted
RE->>Pattern: _detectPatterns(newEntry)
Pattern-->>RE: pattern created/updated
Task->>RE: getRecommendations(context)
RE->>Rec: score reflections (outcome, tags, decay)
Rec-->>RE: ranked strategies
RE->>Task: injectContext(augmentedContext)
Note over RE: emits REFLECTION_RECORDED, PATTERN_DETECTED, STRATEGY_RECOMMENDED
Estimated code review effort🎯 4 (Complex) | ⏱️ ~70 minutes 🚥 Pre-merge checks | ✅ 2 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
✏️ Tip: You can configure your own custom pre-merge checks in the settings. ✨ Finishing Touches🧪 Generate unit tests (beta)
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Pull request overview
Adds an “Agent Reflection Engine” intended to persist execution reflections across sessions and use them to detect patterns, recommend strategies, and inject relevant context before similar tasks—part of the Persistent Memory Layer work for AIP Phase 2.
Changes:
- Introduces a new
ReflectionEnginemodule with persistence, recommendation, pattern detection, trend tracking, and pruning. - Adds a comprehensive Jest unit test suite for the reflection engine.
- Adjusts
GotchasMemorydynamic import style in execution/ideation modules and updates the install manifest accordingly.
Reviewed changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated 6 comments.
Show a summary per file
| File | Description |
|---|---|
.aios-core/core/memory/reflection-engine.js |
New reflection engine implementation (persistence, recommendations, patterns, trends, pruning). |
tests/core/memory/reflection-engine.test.js |
New unit tests covering load/save, recording, recommendations, injection, patterns, trends, pruning, stats/listing. |
.aiox-core/core/execution/context-injector.js |
Updates optional GotchasMemory import to destructure the exported constructor; logs warn on failure. |
.aiox-core/core/execution/subagent-dispatcher.js |
Same GotchasMemory import adjustment + warning log on failure. |
.aiox-core/core/ideation/ideation-engine.js |
Same GotchasMemory import adjustment + warning log on failure. |
.aiox-core/install-manifest.yaml |
Regenerated manifest (hash/size updates for modified files and timestamp). |
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| const pruned = before - this.reflections.length; | ||
| if (pruned > 0) { | ||
| this.emit(Events.REFLECTIONS_PRUNED, { count: pruned, reason: 'retention_window', removed }); |
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prune() removes reflections but does not update/recompute this.patterns, so injected patterns/recommendations may be based on reflections that no longer exist (retention window / max limit). Consider rebuilding patterns after pruning, or pruning patterns whose strategies/taskTypes no longer meet minReflectionsForPattern.
| this.emit(Events.REFLECTIONS_PRUNED, { count: pruned, reason: 'retention_window', removed }); | |
| this.emit(Events.REFLECTIONS_PRUNED, { count: pruned, reason: 'retention_window', removed }); | |
| // Ensure patterns remain consistent with the pruned reflections. | |
| // If patterns are derived from reflections, they are now potentially stale. | |
| if (Array.isArray(this.patterns)) { | |
| this.patterns = []; | |
| } | |
| // If the class provides a rebuild hook, use it to recompute patterns from | |
| // the remaining reflections. | |
| if (typeof this.rebuildPatterns === 'function') { | |
| this.rebuildPatterns(); | |
| } |
| * Features: | ||
| * - AC1: reflection-engine.js in .aios-core/core/memory/ | ||
| * - AC2: Persists in .aiox/reflections.json | ||
| * - AC3: Records execution reflections with outcome, duration, strategy used | ||
| * - AC4: Extracts recurring patterns from reflections (success/failure clusters) |
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This new module lives under .aios-core/, but the package publish configuration only includes .aiox-core/ (see package.json files). As-is, reflection-engine.js will not ship to consumers and is also missing from the install-manifest, so the feature will work in tests but not in a packaged install. Move the engine into .aiox-core/core/memory/ (to match other memory modules) or update the publish/install manifests to include .aios-core/.
| injectContext(context) { | ||
| const recommendations = this.getRecommendations(context); | ||
| const relevantPatterns = this.patterns.filter( | ||
| (p) => p.taskType === context.taskType || (context.tags && context.tags.some((t) => p.tags.includes(t))), |
There was a problem hiding this comment.
injectContext() assumes every pattern has tags and calls p.tags.includes(...). Since load() does not validate/normalize the persisted patterns array, a missing/invalid tags field in the JSON will throw at runtime during context injection. Consider normalizing patterns on load (default tags to []) and/or guarding p.tags in this filter.
| (p) => p.taskType === context.taskType || (context.tags && context.tags.some((t) => p.tags.includes(t))), | |
| (p) => | |
| p.taskType === context.taskType || | |
| (Array.isArray(context.tags) && | |
| context.tags.some((t) => Array.isArray(p.tags) && p.tags.includes(t))), |
| durationMs: reflection.durationMs || null, | ||
| lesson: reflection.lesson || null, | ||
| context: reflection.context || null, |
There was a problem hiding this comment.
recordReflection() uses || when defaulting optional fields (e.g. durationMs: reflection.durationMs || null). This will treat valid falsy values like 0 (and empty strings for lesson/context) as missing and overwrite them. Use nullish coalescing (??) or explicit type checks so 0/'' are preserved when intentionally provided.
| durationMs: reflection.durationMs || null, | |
| lesson: reflection.lesson || null, | |
| context: reflection.context || null, | |
| durationMs: reflection.durationMs ?? null, | |
| lesson: reflection.lesson ?? null, | |
| context: reflection.context ?? null, |
| // Enforce max reflections | ||
| if (this.reflections.length > this.config.maxReflections) { | ||
| const removed = this.reflections.shift(); | ||
| this.emit(Events.REFLECTIONS_PRUNED, { count: 1, reason: 'max_limit', removed: [removed.id] }); | ||
| } |
There was a problem hiding this comment.
When enforcing maxReflections, an old reflection is removed but this.patterns is left unchanged. This can leave patterns that are no longer supported by the current reflection set (or have incorrect sample sizes). Consider updating/removing affected patterns or rebuilding patterns after any reflection removal to keep patterns consistent with reflections.
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| const fs = require('fs'); | ||
| const path = require('path'); | ||
| const ReflectionEngine = require('../../../.aios-core/core/memory/reflection-engine'); |
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The tests import the engine from ../../../.aios-core/..., which will pass in-repo but will break for consumers if .aios-core/ is not shipped (it currently isn’t in package.json files). If the engine is moved into .aiox-core/, update this import path accordingly to avoid tests masking a packaging/runtime issue.
| const ReflectionEngine = require('../../../.aios-core/core/memory/reflection-engine'); | |
| const ReflectionEngine = require('../../../.aiox-core/core/memory/reflection-engine'); |
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Actionable comments posted: 5
🧹 Nitpick comments (1)
.aiox-core/core/ideation/ideation-engine.js (1)
16-16: Use the repo's absolute module path here.This touched
require()still uses a relative import, and the same pattern is repeated in the other updated core loaders.As per coding guidelines, "
**/*.{js,jsx,ts,tsx}: Use absolute imports instead of relative imports in all code`".🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aiox-core/core/ideation/ideation-engine.js at line 16, The code in ideation-engine.js imports GotchasMemory with a relative require (require('../memory/gotchas-memory')); replace that with the repo's canonical absolute module import for GotchasMemory (follow the project's absolute-import convention) so the GotchasMemory symbol is imported via the absolute path rather than a relative one; update the require call accordingly and mirror the same change pattern in the other updated core loaders that use similar relative imports.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In @.aios-core/core/memory/reflection-engine.js:
- Around line 100-122: The class currently sets this._loaded in load() but does
not enforce it, allowing public methods like recordReflection() and save() to
run before load() and clobber disk state; add a small initialization guard:
implement a private async method (e.g., _ensureLoaded()) that checks
this._loaded and if false awaits this.load() (or throws if you prefer strict
behavior), and call _ensureLoaded() at the start of all public read/write APIs
(including recordReflection(), save(), and the other public methods referenced
around lines 127-144 and 161-193) so operations either lazy-load the file first
or fail until load completes. Ensure load() remains idempotent and sets
this._loaded = true on success and leaves it false on failure so the guard
behaves correctly.
- Around line 289-303: injectContext(context) in ReflectionEngine is only
exercised by tests because the runtime context-injector doesn't call it; wire
the reflection engine into the execution-side context construction so production
contexts get reflections. Import or obtain the ReflectionEngine instance in the
execution/context-injector (or the module that builds runtime context), then
call ReflectionEngine.injectContext(context) (using the existing injectContext
method name) and return that enriched context instead of the current plain
context; ensure this runs after MemoryQuery/GotchasMemory/SessionMemory are
initialized so reflections can use those memories.
- Around line 183-186: When a reflection is evicted (e.g., the shift in the
block referencing this.reflections and this.config.maxReflections and the other
removal path around the 367-382 block), you must also remove or rebuild any
entries in this.patterns that reference the removed reflection(s) so
injectContext() can't use stale pattern data; capture the removed reflection
id(s) (the removed variable/array) and either call a new helper (e.g.,
prunePatternsByReflectionIds(removedIds)) or inline-filter this.patterns to
exclude patterns whose source reflection id matches any removed id, then
continue to emit Events.REFLECTIONS_PRUNED with the same metadata.
- Around line 1-24: The new module header "AIOX Agent Reflection Engine" was
added under .aios-core but the runtime tree and install manifest expect modules
under .aiox-core, so move the file reflection-engine.js into the packaged core
tree (the core/memory path under .aiox-core) and update the packaging/install
manifest to include core/memory/reflection-engine.js; ensure any build/package
config or index that enumerates core modules (the manifest and any module
registry used at runtime) references the new location and that the file retains
its shebang and top-level metadata so the reflection engine is included in
brownfield installs/upgrades.
- Around line 127-143: save() currently overwrites the shared JSON file causing
last-writer-wins data loss; change save() (and use _getFilePath, reflections,
patterns) to perform a read-merge-write with an atomic write and simple
concurrency control: before writing, read the on-disk file (if exists), parse
and merge its reflections/patterns with this.reflections/this.patterns using a
deterministic dedupe key (e.g., id or timestamp), then write the merged object
to a temp file and atomically rename to the target path (fs.writeFileSync temp +
fs.renameSync) to avoid partial writes; additionally implement a retry loop that
re-reads and re-merges if the on-disk file changed between read and rename (or
use an advisory file lock if available) so concurrent saves converge instead of
clobbering.
---
Nitpick comments:
In @.aiox-core/core/ideation/ideation-engine.js:
- Line 16: The code in ideation-engine.js imports GotchasMemory with a relative
require (require('../memory/gotchas-memory')); replace that with the repo's
canonical absolute module import for GotchasMemory (follow the project's
absolute-import convention) so the GotchasMemory symbol is imported via the
absolute path rather than a relative one; update the require call accordingly
and mirror the same change pattern in the other updated core loaders that use
similar relative imports.
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📒 Files selected for processing (6)
.aios-core/core/memory/reflection-engine.js.aiox-core/core/execution/context-injector.js.aiox-core/core/execution/subagent-dispatcher.js.aiox-core/core/ideation/ideation-engine.js.aiox-core/install-manifest.yamltests/core/memory/reflection-engine.test.js
| async load() { | ||
| const filePath = this._getFilePath(); | ||
| try { | ||
| if (fs.existsSync(filePath)) { | ||
| const raw = fs.readFileSync(filePath, 'utf8'); | ||
| const data = JSON.parse(raw); | ||
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| if (data.schemaVersion !== this.config.schemaVersion) { | ||
| this.reflections = []; | ||
| this.patterns = []; | ||
| this._loaded = true; | ||
| return; | ||
| } | ||
|
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||
| this.reflections = Array.isArray(data.reflections) ? data.reflections : []; | ||
| this.patterns = Array.isArray(data.patterns) ? data.patterns : []; | ||
| } | ||
| } catch { | ||
| this.reflections = []; | ||
| this.patterns = []; | ||
| } | ||
| this._loaded = true; | ||
| } |
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Require initialization before any public read/write API runs.
_loaded is set in load() but never enforced. A fresh process can call recordReflection(); save() without loading the existing file first, and save() will overwrite the on-disk store with only the new in-memory state. Either throw until load() completes or lazy-load inside the public methods.
Also applies to: 127-144, 161-193
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aios-core/core/memory/reflection-engine.js around lines 100 - 122, The
class currently sets this._loaded in load() but does not enforce it, allowing
public methods like recordReflection() and save() to run before load() and
clobber disk state; add a small initialization guard: implement a private async
method (e.g., _ensureLoaded()) that checks this._loaded and if false awaits
this.load() (or throws if you prefer strict behavior), and call _ensureLoaded()
at the start of all public read/write APIs (including recordReflection(),
save(), and the other public methods referenced around lines 127-144 and
161-193) so operations either lazy-load the file first or fail until load
completes. Ensure load() remains idempotent and sets this._loaded = true on
success and leaves it false on failure so the guard behaves correctly.
| injectContext(context) { | ||
| const recommendations = this.getRecommendations(context); | ||
| const relevantPatterns = this.patterns.filter( | ||
| (p) => p.taskType === context.taskType || (context.tags && context.tags.some((t) => p.tags.includes(t))), | ||
| ); | ||
|
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||
| return { | ||
| ...context, | ||
| reflections: { | ||
| recommendations, | ||
| patterns: relevantPatterns, | ||
| totalReflections: this.reflections.filter((r) => r.taskType === context.taskType).length, | ||
| }, | ||
| }; | ||
| } |
There was a problem hiding this comment.
injectContext() still has no production caller.
The execution-side context injector shown in .aiox-core/core/execution/context-injector.js still only initializes MemoryQuery, GotchasMemory, and SessionMemory, so this method is currently exercised only by unit tests. AC7 is not actually delivered until the runtime path calls it.
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aios-core/core/memory/reflection-engine.js around lines 289 - 303,
injectContext(context) in ReflectionEngine is only exercised by tests because
the runtime context-injector doesn't call it; wire the reflection engine into
the execution-side context construction so production contexts get reflections.
Import or obtain the ReflectionEngine instance in the execution/context-injector
(or the module that builds runtime context), then call
ReflectionEngine.injectContext(context) (using the existing injectContext method
name) and return that enriched context instead of the current plain context;
ensure this runs after MemoryQuery/GotchasMemory/SessionMemory are initialized
so reflections can use those memories.
There was a problem hiding this comment.
Actionable comments posted: 5
🧹 Nitpick comments (3)
.aios-core/core/memory/reflection-engine.js (3)
500-503: SameforEachissue as_detectPatterns.Apply the same fix using
for...offor consistency.♻️ Proposed fix
const tagSet = new Set(); for (const r of group) { - if (r.tags) r.tags.forEach((t) => tagSet.add(t)); + if (r.tags) { + for (const t of r.tags) tagSet.add(t); + } }🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aios-core/core/memory/reflection-engine.js around lines 500 - 503, The block building tagSet uses r.tags.forEach which can be replaced for consistency and safety with a for...of loop: in the same area as the group iteration (where tagSet, group, and r.tags are used, analogous to the _detectPatterns change), iterate over r.tags using for (const t of r.tags) { tagSet.add(t); } and remove the forEach call so tag collection uses a for...of pattern consistently.
296-303: Consider naming clarity for nestedpatternskey.The returned
context.reflections.patternscontains reflection-derived patterns. Themaster-orchestratoralso injects a top-levelpatternskey with execution insights. While not a direct conflict (different nesting), consumers may need clarity on which patterns to use.🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aios-core/core/memory/reflection-engine.js around lines 296 - 303, The nested key context.reflections.patterns is ambiguous with the top-level patterns injected elsewhere; rename that property to something explicit (e.g., reflectionPatterns or patternsFromReflections) in the object returned by the function that builds the reflections block (the return that currently spreads ...context and sets reflections: { recommendations, patterns: relevantPatterns, totalReflections: ... }) and update any internal usages that read context.reflections.patterns to the new name (also update tests and docs referencing this shape) so callers can clearly distinguish reflection-derived patterns from the top-level execution insights patterns.
446-450:forEachcallback should not return a value.
tagSet.add(t)returns the Set, whichforEachignores. While harmless, this triggers a lint warning andfor...ofis cleaner.♻️ Proposed fix
const tagSet = new Set(); for (const r of all) { - if (r.tags) r.tags.forEach((t) => tagSet.add(t)); + if (r.tags) { + for (const t of r.tags) tagSet.add(t); + } }🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aios-core/core/memory/reflection-engine.js around lines 446 - 450, The lint warning comes from using r.tags.forEach((t) => tagSet.add(t)) which returns the Set inside the callback; change this to iterate without returning a value—e.g., replace the forEach with a for...of loop over r.tags (for (const t of r.tags) tagSet.add(t);) so the callback does not return anything and the code is cleaner; update the loop that populates tagSet (variables: tagSet, all, r, r.tags) accordingly.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In @.aios-core/core/memory/reflection-engine.js:
- Around line 107-112: The code silently discards on-disk data when
data.schemaVersion !== this.config.schemaVersion by immediately clearing
this.reflections, this.patterns and setting this._loaded; modify the mismatch
handling in the function containing that check to (1) log or emit a warning
including both data.schemaVersion and this.config.schemaVersion, (2) persist or
move the existing data to a backup location or expose it via an event before
clearing, and (3) only reset this.reflections/this.patterns after the backup
succeeds (or provide a configurable policy to preserve vs reset); update the
branch where data.schemaVersion !== this.config.schemaVersion to call your
logger/backup utilities and include those version values in the message so the
reset is explicit and recoverable.
- Around line 117-120: The empty catch swallows errors when loading reflections;
change it to catch the error (e.g., catch (err)) and log the failure before
resetting state: call the existing logger (or console.error) with a clear
message and the error object, then set this.reflections = [] and this.patterns =
[]; ensure the catch references the same symbols shown (this.reflections,
this.patterns) so the error is recorded for debugging.
- Line 143: fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8')
can throw on I/O errors; wrap this call in a try/catch (around the
fs.writeFileSync invocation that uses filePath and data) and handle errors
appropriately: catch the exception, log a clear error message including filePath
and the error object via your module logger (or console.error if no logger), and
either rethrow a wrapped error or return a controlled failure value so it
doesn’t crash the process unexpectedly; ensure the catch does not swallow the
error silently.
In @.aiox-core/core/memory/reflection-engine.js:
- Around line 127-144: The save() method uses blocking fs.mkdirSync and
fs.writeFileSync inside an async function; replace these with the non-blocking
fs.promises equivalents: await fs.promises.mkdir(dir, { recursive: true }) and
await fs.promises.writeFile(filePath, JSON.stringify(data, null, 2), 'utf8'),
keeping the same data object (schemaVersion, version, savedAt, reflections,
patterns) and using this._getFilePath() to locate file; ensure save() awaits the
async calls and properly propagates or catches errors as appropriate.
- Around line 100-122: The load() method is marked async but does synchronous fs
I/O and swallows errors; change load() to use non-blocking fs.promises (e.g.,
fs.promises.access or fs.promises.readFile) to check existence and read the file
asynchronously via this._getFilePath(), then JSON.parse the result and retain
the existing schemaVersion check and assignments to this.reflections and
this.patterns (fall back to [] if not arrays); replace the empty catch block
with one that logs or rethrows the caught error (include context: filePath,
config.schemaVersion) and still ensure this._loaded is set to true at the end so
callers relying on that flag behave correctly.
---
Nitpick comments:
In @.aios-core/core/memory/reflection-engine.js:
- Around line 500-503: The block building tagSet uses r.tags.forEach which can
be replaced for consistency and safety with a for...of loop: in the same area as
the group iteration (where tagSet, group, and r.tags are used, analogous to the
_detectPatterns change), iterate over r.tags using for (const t of r.tags) {
tagSet.add(t); } and remove the forEach call so tag collection uses a for...of
pattern consistently.
- Around line 296-303: The nested key context.reflections.patterns is ambiguous
with the top-level patterns injected elsewhere; rename that property to
something explicit (e.g., reflectionPatterns or patternsFromReflections) in the
object returned by the function that builds the reflections block (the return
that currently spreads ...context and sets reflections: { recommendations,
patterns: relevantPatterns, totalReflections: ... }) and update any internal
usages that read context.reflections.patterns to the new name (also update tests
and docs referencing this shape) so callers can clearly distinguish
reflection-derived patterns from the top-level execution insights patterns.
- Around line 446-450: The lint warning comes from using r.tags.forEach((t) =>
tagSet.add(t)) which returns the Set inside the callback; change this to iterate
without returning a value—e.g., replace the forEach with a for...of loop over
r.tags (for (const t of r.tags) tagSet.add(t);) so the callback does not return
anything and the code is cleaner; update the loop that populates tagSet
(variables: tagSet, all, r, r.tags) accordingly.
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📒 Files selected for processing (2)
.aios-core/core/memory/reflection-engine.js.aiox-core/core/memory/reflection-engine.js
| if (data.schemaVersion !== this.config.schemaVersion) { | ||
| this.reflections = []; | ||
| this.patterns = []; | ||
| this._loaded = true; | ||
| return; | ||
| } |
There was a problem hiding this comment.
Schema version mismatch resets data without notification.
When the on-disk schema version differs from the expected version, data is silently discarded. This could cause confusion during upgrades.
🛠️ Proposed fix
if (data.schemaVersion !== this.config.schemaVersion) {
+ console.warn(
+ `[ReflectionEngine] Schema mismatch: found '${data.schemaVersion}', expected '${this.config.schemaVersion}'. Resetting reflections.`
+ );
this.reflections = [];
this.patterns = [];
this._loaded = true;📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| if (data.schemaVersion !== this.config.schemaVersion) { | |
| this.reflections = []; | |
| this.patterns = []; | |
| this._loaded = true; | |
| return; | |
| } | |
| if (data.schemaVersion !== this.config.schemaVersion) { | |
| console.warn( | |
| `[ReflectionEngine] Schema mismatch: found '${data.schemaVersion}', expected '${this.config.schemaVersion}'. Resetting reflections.` | |
| ); | |
| this.reflections = []; | |
| this.patterns = []; | |
| this._loaded = true; | |
| return; | |
| } |
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aios-core/core/memory/reflection-engine.js around lines 107 - 112, The code
silently discards on-disk data when data.schemaVersion !==
this.config.schemaVersion by immediately clearing this.reflections,
this.patterns and setting this._loaded; modify the mismatch handling in the
function containing that check to (1) log or emit a warning including both
data.schemaVersion and this.config.schemaVersion, (2) persist or move the
existing data to a backup location or expose it via an event before clearing,
and (3) only reset this.reflections/this.patterns after the backup succeeds (or
provide a configurable policy to preserve vs reset); update the branch where
data.schemaVersion !== this.config.schemaVersion to call your logger/backup
utilities and include those version values in the message so the reset is
explicit and recoverable.
| } catch { | ||
| this.reflections = []; | ||
| this.patterns = []; | ||
| } |
There was a problem hiding this comment.
Silent error handling obscures load failures.
The empty catch block swallows all errors (parse failures, permission issues, etc.) without logging. This makes debugging difficult when reflections unexpectedly reset.
🛠️ Proposed fix
- } catch {
+ } catch (err) {
+ // Log but continue with empty state to maintain resilience
+ console.warn('[ReflectionEngine] Failed to load reflections:', err.message);
this.reflections = [];
this.patterns = [];
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| } catch { | |
| this.reflections = []; | |
| this.patterns = []; | |
| } | |
| } catch (err) { | |
| // Log but continue with empty state to maintain resilience | |
| console.warn('[ReflectionEngine] Failed to load reflections:', err.message); | |
| this.reflections = []; | |
| this.patterns = []; | |
| } |
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aios-core/core/memory/reflection-engine.js around lines 117 - 120, The
empty catch swallows errors when loading reflections; change it to catch the
error (e.g., catch (err)) and log the failure before resetting state: call the
existing logger (or console.error) with a clear message and the error object,
then set this.reflections = [] and this.patterns = []; ensure the catch
references the same symbols shown (this.reflections, this.patterns) so the error
is recorded for debugging.
| patterns: this.patterns, | ||
| }; | ||
|
|
||
| fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8'); |
There was a problem hiding this comment.
writeFileSync can throw on I/O errors.
No error handling around the write operation. Disk full, permission denied, or other I/O errors will propagate as unhandled exceptions.
🛠️ Proposed fix
- fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8');
+ try {
+ fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8');
+ } catch (err) {
+ console.error('[ReflectionEngine] Failed to save reflections:', err.message);
+ throw err; // Re-throw so caller knows save failed
+ }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8'); | |
| try { | |
| fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8'); | |
| } catch (err) { | |
| console.error('[ReflectionEngine] Failed to save reflections:', err.message); | |
| throw err; // Re-throw so caller knows save failed | |
| } |
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aios-core/core/memory/reflection-engine.js at line 143,
fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8') can throw on
I/O errors; wrap this call in a try/catch (around the fs.writeFileSync
invocation that uses filePath and data) and handle errors appropriately: catch
the exception, log a clear error message including filePath and the error object
via your module logger (or console.error if no logger), and either rethrow a
wrapped error or return a controlled failure value so it doesn’t crash the
process unexpectedly; ensure the catch does not swallow the error silently.
| async load() { | ||
| const filePath = this._getFilePath(); | ||
| try { | ||
| if (fs.existsSync(filePath)) { | ||
| const raw = fs.readFileSync(filePath, 'utf8'); | ||
| const data = JSON.parse(raw); | ||
|
|
||
| if (data.schemaVersion !== this.config.schemaVersion) { | ||
| this.reflections = []; | ||
| this.patterns = []; | ||
| this._loaded = true; | ||
| return; | ||
| } | ||
|
|
||
| this.reflections = Array.isArray(data.reflections) ? data.reflections : []; | ||
| this.patterns = Array.isArray(data.patterns) ? data.patterns : []; | ||
| } | ||
| } catch { | ||
| this.reflections = []; | ||
| this.patterns = []; | ||
| } | ||
| this._loaded = true; | ||
| } |
There was a problem hiding this comment.
Misleading async signature with synchronous file I/O.
The load() method is marked async but uses synchronous fs.existsSync and fs.readFileSync. This is misleading to callers who expect non-blocking behavior and can block the event loop under load.
Additionally, the empty catch {} block at line 117 silently swallows errors, losing valuable diagnostic information when file parsing fails.
🔧 Proposed fix using async fs operations
async load() {
const filePath = this._getFilePath();
try {
- if (fs.existsSync(filePath)) {
- const raw = fs.readFileSync(filePath, 'utf8');
+ const raw = await fs.promises.readFile(filePath, 'utf8');
- const data = JSON.parse(raw);
+ const data = JSON.parse(raw);
- if (data.schemaVersion !== this.config.schemaVersion) {
- this.reflections = [];
- this.patterns = [];
- this._loaded = true;
- return;
- }
+ if (data.schemaVersion !== this.config.schemaVersion) {
+ this.reflections = [];
+ this.patterns = [];
+ this._loaded = true;
+ return;
+ }
- this.reflections = Array.isArray(data.reflections) ? data.reflections : [];
- this.patterns = Array.isArray(data.patterns) ? data.patterns : [];
- }
- } catch {
+ this.reflections = Array.isArray(data.reflections) ? data.reflections : [];
+ this.patterns = Array.isArray(data.patterns) ? data.patterns : [];
+ } catch (err) {
+ if (err.code !== 'ENOENT') {
+ console.warn(`[ReflectionEngine] Failed to load reflections: ${err.message}`);
+ }
this.reflections = [];
this.patterns = [];
}
this._loaded = true;
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| async load() { | |
| const filePath = this._getFilePath(); | |
| try { | |
| if (fs.existsSync(filePath)) { | |
| const raw = fs.readFileSync(filePath, 'utf8'); | |
| const data = JSON.parse(raw); | |
| if (data.schemaVersion !== this.config.schemaVersion) { | |
| this.reflections = []; | |
| this.patterns = []; | |
| this._loaded = true; | |
| return; | |
| } | |
| this.reflections = Array.isArray(data.reflections) ? data.reflections : []; | |
| this.patterns = Array.isArray(data.patterns) ? data.patterns : []; | |
| } | |
| } catch { | |
| this.reflections = []; | |
| this.patterns = []; | |
| } | |
| this._loaded = true; | |
| } | |
| async load() { | |
| const filePath = this._getFilePath(); | |
| try { | |
| const raw = await fs.promises.readFile(filePath, 'utf8'); | |
| const data = JSON.parse(raw); | |
| if (data.schemaVersion !== this.config.schemaVersion) { | |
| this.reflections = []; | |
| this.patterns = []; | |
| this._loaded = true; | |
| return; | |
| } | |
| this.reflections = Array.isArray(data.reflections) ? data.reflections : []; | |
| this.patterns = Array.isArray(data.patterns) ? data.patterns : []; | |
| } catch (err) { | |
| if (err.code !== 'ENOENT') { | |
| console.warn(`[ReflectionEngine] Failed to load reflections: ${err.message}`); | |
| } | |
| this.reflections = []; | |
| this.patterns = []; | |
| } | |
| this._loaded = true; | |
| } |
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aiox-core/core/memory/reflection-engine.js around lines 100 - 122, The
load() method is marked async but does synchronous fs I/O and swallows errors;
change load() to use non-blocking fs.promises (e.g., fs.promises.access or
fs.promises.readFile) to check existence and read the file asynchronously via
this._getFilePath(), then JSON.parse the result and retain the existing
schemaVersion check and assignments to this.reflections and this.patterns (fall
back to [] if not arrays); replace the empty catch block with one that logs or
rethrows the caught error (include context: filePath, config.schemaVersion) and
still ensure this._loaded is set to true at the end so callers relying on that
flag behave correctly.
| async save() { | ||
| const filePath = this._getFilePath(); | ||
| const dir = path.dirname(filePath); | ||
|
|
||
| if (!fs.existsSync(dir)) { | ||
| fs.mkdirSync(dir, { recursive: true }); | ||
| } | ||
|
|
||
| const data = { | ||
| schemaVersion: this.config.schemaVersion, | ||
| version: this.config.version, | ||
| savedAt: new Date().toISOString(), | ||
| reflections: this.reflections, | ||
| patterns: this.patterns, | ||
| }; | ||
|
|
||
| fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8'); | ||
| } |
There was a problem hiding this comment.
Synchronous file writes in async method.
Similar to load(), the save() method is marked async but uses synchronous fs.mkdirSync and fs.writeFileSync. This blocks the event loop during writes.
🔧 Proposed fix using async fs operations
async save() {
const filePath = this._getFilePath();
const dir = path.dirname(filePath);
- if (!fs.existsSync(dir)) {
- fs.mkdirSync(dir, { recursive: true });
- }
+ await fs.promises.mkdir(dir, { recursive: true });
const data = {
schemaVersion: this.config.schemaVersion,
version: this.config.version,
savedAt: new Date().toISOString(),
reflections: this.reflections,
patterns: this.patterns,
};
- fs.writeFileSync(filePath, JSON.stringify(data, null, 2), 'utf8');
+ await fs.promises.writeFile(filePath, JSON.stringify(data, null, 2), 'utf8');
}🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aiox-core/core/memory/reflection-engine.js around lines 127 - 144, The
save() method uses blocking fs.mkdirSync and fs.writeFileSync inside an async
function; replace these with the non-blocking fs.promises equivalents: await
fs.promises.mkdir(dir, { recursive: true }) and await
fs.promises.writeFile(filePath, JSON.stringify(data, null, 2), 'utf8'), keeping
the same data object (schemaVersion, version, savedAt, reflections, patterns)
and using this._getFilePath() to locate file; ensure save() awaits the async
calls and properly propagates or catches errors as appropriate.
gotchas-memory.js exporta named export { GotchasMemory, ... }, mas
ideation-engine.js atribuía o objeto module inteiro à variável.
Resultado: new GotchasMemory() lançava TypeError silenciado pelo
try/catch, e gotchasMemory ficava sempre null.
Corrige com destructuring: ({ GotchasMemory } = require(...))
Closes SynkraAI#517
Story 9.6 of Epic 9 (Persistent Memory Layer). Phase 2 of Agent Immortality Protocol (SynkraAI#482). The Reflection Engine enables agents to learn from past executions: - Record execution reflections with outcome, strategy, duration - Extract recurring patterns (success/failure clusters) - Recommend strategies before similar tasks based on history - Track performance trends per agent and task type - Inject relevant reflections as context before execution - Auto-prune stale reflections beyond retention window 44 unit tests covering all features including edge cases.
- Use nullish coalescing (??) instead of || for durationMs, lesson, context fields to correctly preserve falsy values like 0 - Add null check for p.tags in injectContext() to prevent TypeError when patterns lack tags - Add _recomputePatterns() method that rebuilds patterns from remaining reflections after pruning - Call _recomputePatterns() in prune() and after maxReflections eviction to keep patterns consistent with remaining data - Copy reflection-engine.js to .aiox-core/core/memory/ for rebranded package path compatibility (keeps .aios-core version too)
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Codecov Report❌ Patch coverage is
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There was a problem hiding this comment.
Actionable comments posted: 2
🧹 Nitpick comments (5)
.aios-core/core/memory/reflection-engine.js (3)
447-450: Static analysis:forEachcallback should not return a value.The
add()method returns the Set, butforEachexpects callbacks to return nothing. While harmless here, usingfor...ofis cleaner.♻️ Suggested fix
const tagSet = new Set(); for (const r of all) { - if (r.tags) r.tags.forEach((t) => tagSet.add(t)); + if (r.tags) { + for (const t of r.tags) tagSet.add(t); + } }🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aios-core/core/memory/reflection-engine.js around lines 447 - 450, The code uses r.tags.forEach((t) => tagSet.add(t)) where Array.prototype.forEach callbacks should not return values; replace this with an explicit loop to avoid relying on add()'s return and make intent clearer: iterate over all (the variable all) and for each r where r.tags exists, use a for...of (or simple for) over r.tags and call tagSet.add(t) for each t; keep the tagSet and r variables unchanged so you only swap the forEach to an explicit iteration.
500-503: Static analysis: SameforEachcallback return value issue.Same as line 449 - use
for...offor cleaner iteration.♻️ Suggested fix
const tagSet = new Set(); for (const r of group) { - if (r.tags) r.tags.forEach((t) => tagSet.add(t)); + if (r.tags) { + for (const t of r.tags) tagSet.add(t); + } }🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aios-core/core/memory/reflection-engine.js around lines 500 - 503, The loop building tagSet uses Array.prototype.forEach callback (r.tags.forEach((t) => tagSet.add(t))) which can be replaced with a direct for...of to avoid relying on forEach return/behavior; change the inner iteration over r.tags to: for (const t of r.tags) tagSet.add(t), keeping the outer loop over group as-is (references: tagSet, group, r.tags).
333-348: Edge case: Trend detection with very few reflections may produce misleading results.When
relevant.lengthis 1-2, the half-split logic produces imbalanced or empty halves:
- With 1 reflection:
firstHalf = [],secondHalf = [1 item]→firstRate = 0,secondRate = 0 or 1- This can falsely indicate "improving" or "declining" based on a single data point.
Consider adding a minimum sample size check before computing trend direction.
💡 Suggested improvement
let trend = 'stable'; - if (secondRate - firstRate > 0.15) trend = 'improving'; - else if (firstRate - secondRate > 0.15) trend = 'declining'; + // Require minimum samples in each half for meaningful trend + if (firstHalf.length >= 2 && secondHalf.length >= 2) { + if (secondRate - firstRate > 0.15) trend = 'improving'; + else if (firstRate - secondRate > 0.15) trend = 'declining'; + } else { + trend = 'insufficient_data'; + }🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aios-core/core/memory/reflection-engine.js around lines 333 - 348, The trend calculation using the mid-split (variables mid, firstHalf, secondHalf, firstRate, secondRate, trend) can be misleading for very small relevant arrays; add a minimum sample-size guard (e.g., if relevant.length < 4) before computing firstRate/secondRate and set trend to 'stable' or 'insufficient' when the sample is too small, otherwise proceed with the current split and threshold logic; update the code that computes trend (the block that sets firstRate, secondRate and evaluates secondRate - firstRate) to early-return or short-circuit when relevant.length is below the chosen minimum..aiox-core/core/memory/reflection-engine.js (2)
80-88: Consider documenting thread-safety assumptions.The class maintains in-memory state (
reflections,patterns) without synchronization primitives. This is acceptable for single-threaded Node.js usage, but a brief comment noting that concurrent access from multiple orchestration flows could lead to race conditions would help future maintainers.🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aiox-core/core/memory/reflection-engine.js around lines 80 - 88, Add a brief comment in the ReflectionEngine class explaining the thread-safety assumptions: note that the in-memory state fields (reflections, patterns, _loaded) are not synchronized and are safe under Node.js single-threaded event loop usage, and warn that concurrent access from worker threads or external orchestration flows could cause race conditions and would require synchronization or moving state to a thread-safe store; place this comment near the ReflectionEngine constructor to make it discoverable.
413-424: List returns most recent reflections by design.The
slice(-filter.limit)returns the tail of the array, which corresponds to the most recent reflections given chronological ordering. This behavior is useful but could benefit from a brief doc comment clarifying the semantics.🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In @.aiox-core/core/memory/reflection-engine.js around lines 413 - 424, The listReflections method uses slice(-filter.limit) to return the tail of the chronological reflections array (i.e., the most recent reflections) when a limit is provided; add a brief doc comment above the listReflections function explaining that the reflections array is ordered chronologically and that filter.limit returns the most recent N reflections (not the first N), and mention the semantics for other filter keys (taskType, agentId, outcome, tag) so callers understand ordering and filtering behavior.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In @.aios-core/core/memory/reflection-engine.js:
- Around line 1-24: The CI failure is due to the new reflection-engine.js module
not being registered in the project's manifest; run the manifest generator (npm
run generate:manifest) to regenerate and include reflection-engine.js (the "AIOX
Agent Reflection Engine" module), verify the manifest now lists
reflection-engine.js, and commit the updated manifest so the module is included
in installs/upgrades.
In @.aiox-core/install-manifest.yaml:
- Around line 11-14: The install manifest is missing the auto-generated entry
for core/memory/reflection-engine.js; run the manifest regeneration using the
generator (run: npm run generate:manifest or execute
scripts/generate-install-manifest.js) so that .aiox-core/install-manifest.yaml
includes "core/memory/reflection-engine.js" in the files list and updates
generated_at/file_count accordingly, then commit the updated manifest.
---
Nitpick comments:
In @.aios-core/core/memory/reflection-engine.js:
- Around line 447-450: The code uses r.tags.forEach((t) => tagSet.add(t)) where
Array.prototype.forEach callbacks should not return values; replace this with an
explicit loop to avoid relying on add()'s return and make intent clearer:
iterate over all (the variable all) and for each r where r.tags exists, use a
for...of (or simple for) over r.tags and call tagSet.add(t) for each t; keep the
tagSet and r variables unchanged so you only swap the forEach to an explicit
iteration.
- Around line 500-503: The loop building tagSet uses Array.prototype.forEach
callback (r.tags.forEach((t) => tagSet.add(t))) which can be replaced with a
direct for...of to avoid relying on forEach return/behavior; change the inner
iteration over r.tags to: for (const t of r.tags) tagSet.add(t), keeping the
outer loop over group as-is (references: tagSet, group, r.tags).
- Around line 333-348: The trend calculation using the mid-split (variables mid,
firstHalf, secondHalf, firstRate, secondRate, trend) can be misleading for very
small relevant arrays; add a minimum sample-size guard (e.g., if relevant.length
< 4) before computing firstRate/secondRate and set trend to 'stable' or
'insufficient' when the sample is too small, otherwise proceed with the current
split and threshold logic; update the code that computes trend (the block that
sets firstRate, secondRate and evaluates secondRate - firstRate) to early-return
or short-circuit when relevant.length is below the chosen minimum.
In @.aiox-core/core/memory/reflection-engine.js:
- Around line 80-88: Add a brief comment in the ReflectionEngine class
explaining the thread-safety assumptions: note that the in-memory state fields
(reflections, patterns, _loaded) are not synchronized and are safe under Node.js
single-threaded event loop usage, and warn that concurrent access from worker
threads or external orchestration flows could cause race conditions and would
require synchronization or moving state to a thread-safe store; place this
comment near the ReflectionEngine constructor to make it discoverable.
- Around line 413-424: The listReflections method uses slice(-filter.limit) to
return the tail of the chronological reflections array (i.e., the most recent
reflections) when a limit is provided; add a brief doc comment above the
listReflections function explaining that the reflections array is ordered
chronologically and that filter.limit returns the most recent N reflections (not
the first N), and mention the semantics for other filter keys (taskType,
agentId, outcome, tag) so callers understand ordering and filtering behavior.
ℹ️ Review info
⚙️ Run configuration
Configuration used: Path: .coderabbit.yaml
Review profile: CHILL
Plan: Pro
Run ID: 4958adff-17ec-4e4e-95db-9826db65434e
📒 Files selected for processing (7)
.aios-core/core/memory/reflection-engine.js.aiox-core/core/execution/context-injector.js.aiox-core/core/execution/subagent-dispatcher.js.aiox-core/core/ideation/ideation-engine.js.aiox-core/core/memory/reflection-engine.js.aiox-core/install-manifest.yamltests/core/memory/reflection-engine.test.js
🚧 Files skipped from review as they are similar to previous changes (3)
- .aiox-core/core/execution/context-injector.js
- tests/core/memory/reflection-engine.test.js
- .aiox-core/core/execution/subagent-dispatcher.js
| #!/usr/bin/env node | ||
|
|
||
| /** | ||
| * AIOX Agent Reflection Engine | ||
| * | ||
| * Story: 9.6 - Agent Reflection Engine | ||
| * Epic: Epic 9 - Persistent Memory Layer | ||
| * | ||
| * Enables agents to reflect on past executions, extract lessons, | ||
| * and autonomously improve their strategies over time. | ||
| * | ||
| * Features: | ||
| * - AC1: reflection-engine.js in .aios-core/core/memory/ | ||
| * - AC2: Persists in .aiox/reflections.json | ||
| * - AC3: Records execution reflections with outcome, duration, strategy used | ||
| * - AC4: Extracts recurring patterns from reflections (success/failure clusters) | ||
| * - AC5: Recommends strategies before similar tasks based on historical outcomes | ||
| * - AC6: Tracks performance trends per agent, task type, and strategy | ||
| * - AC7: Injects relevant reflections as context before task execution | ||
| * - AC8: Prunes stale reflections beyond retention window | ||
| * | ||
| * @author @dev (Dex) | ||
| * @version 1.0.0 | ||
| */ |
There was a problem hiding this comment.
Pipeline failure: Manifest is outdated and missing this file.
The CI pipeline is failing because core/memory/reflection-engine.js is not registered in the manifest. This will prevent the module from being included in brownfield installs/upgrades.
Run npm run generate:manifest to update the manifest and include this new file.
🧰 Tools
🪛 GitHub Actions: CI
[error] 1-1: Manifest is OUTDATED. A new file 'core/memory/reflection-engine.js' is not in the manifest. To fix, run 'npm run generate:manifest'.
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aios-core/core/memory/reflection-engine.js around lines 1 - 24, The CI
failure is due to the new reflection-engine.js module not being registered in
the project's manifest; run the manifest generator (npm run generate:manifest)
to regenerate and include reflection-engine.js (the "AIOX Agent Reflection
Engine" module), verify the manifest now lists reflection-engine.js, and commit
the updated manifest so the module is included in installs/upgrades.
| generated_at: "2026-03-11T02:24:06.096Z" | ||
| generator: scripts/generate-install-manifest.js | ||
| file_count: 1089 | ||
| files: |
There was a problem hiding this comment.
Manifest is missing the new reflection-engine.js entry.
The CI pipeline failure indicates that core/memory/reflection-engine.js is not listed in the manifest. Since this file is auto-generated, run the regeneration command to include the new module:
npm run generate:manifest🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In @.aiox-core/install-manifest.yaml around lines 11 - 14, The install manifest
is missing the auto-generated entry for core/memory/reflection-engine.js; run
the manifest regeneration using the generator (run: npm run generate:manifest or
execute scripts/generate-install-manifest.js) so that
.aiox-core/install-manifest.yaml includes "core/memory/reflection-engine.js" in
the files list and updates generated_at/file_count accordingly, then commit the
updated manifest.
Resumo
Story 9.6 do Epic 9 (Persistent Memory Layer). Fase 2 do Agent Immortality Protocol (#482).
O Agent Reflection Engine permite que agentes aprendam com execuções passadas e melhorem autonomamente suas estratégias ao longo do tempo.
Funcionalidades
Arquitetura
Segue o mesmo padrão de
gotchas-memory.jsedecision-memory.js:EventEmitterpara integração reativa.aiox/reflections.jsonOutcome,TaskType,EventsArquivos
.aios-core/core/memory/reflection-engine.jstests/core/memory/reflection-engine.test.jsCobertura de Testes
Test plan
npx jest tests/core/memory/reflection-engine.test.js— 44/44 passingIntegrar com orchestration flow para auto-gravar reflexões após tasks(trabalho futuro, issue separada)Conectar com decision-memory para enriquecer contexto(trabalho futuro, issue separada)Summary by CodeRabbit