update reserach skill

This commit is contained in:
Oleksandr Bezdieniezhnykh
2026-04-29 11:58:37 +03:00
parent f321268e1b
commit 5391d2c710
16 changed files with 1263 additions and 24 deletions
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@@ -24,6 +24,7 @@ Phase details live in `phases/` — read the relevant file before executing each
- **Save immediately**: write artifacts to disk after each phase
- **Delegate execution**: all code changes go through the implement skill via task files
- **Ask, don't assume**: when scope or priorities are unclear, STOP and ask the user
- **Exact-fit recommendations**: do not recommend a replacement pattern, library, service, architecture, algorithm, or "modern approach" merely because it improves structure or solves a similar class of problem. It must fit confirmed product constraints, acceptance criteria, operating context, integration boundaries, and current code realities. Otherwise reject it, mark it experimental, or ask the user before adding it to the roadmap.
## Context Resolution
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@@ -7,14 +7,17 @@
## 2a. Deep Research
1. Analyze current implementation patterns
2. Research modern approaches for similar systems
3. Identify what could be done differently
4. Suggest improvements based on state-of-the-art practices
2. Extract the **Project Constraint Matrix** from `problem.md`, `restrictions.md`, `acceptance_criteria.md`, current architecture/docs, and actual code constraints. Include required inputs/outputs, operating context, lifecycle assumptions, integration boundaries, non-functional targets, and hard disqualifiers.
3. Research modern approaches for similar systems
4. For each alternative pattern/library/service/architecture/algorithm, research intrinsic implementation constraints: required inputs/outputs, runtime assumptions, supported deployment modes, resource needs, operational limits, licensing/security constraints, and known failure reports.
5. Identify what could be done differently
6. Suggest improvements only when they fit the Project Constraint Matrix. A cleaner or more modern approach that violates product constraints must be marked `Rejected` or `Experimental only`, not added as a roadmap recommendation.
Write `RUN_DIR/analysis/research_findings.md`:
- Current state analysis: patterns used, strengths, weaknesses
- Alternative approaches per component: current vs alternative, pros/cons, migration effort
- Prioritized recommendations: quick wins + strategic improvements
- Constraint-fit table: recommendation, constraints checked, evidence, mismatches/disqualifiers, status (`Selected` / `Rejected` / `Experimental only` / `Needs user decision`)
## 2b. Solution Assessment & Hardening Tracks
@@ -22,6 +25,7 @@ Write `RUN_DIR/analysis/research_findings.md`:
2. Identify weak points in codebase, map to specific code areas
3. Perform gap analysis: acceptance criteria vs current state
4. Prioritize changes by impact and effort
5. Reject or escalate any proposed refactor that improves code structure while weakening required behavior, integration contracts, runtime constraints, safety/security posture, or acceptance criteria
Present optional hardening tracks for user to include in the roadmap:
@@ -47,6 +51,9 @@ Write `RUN_DIR/analysis/refactoring_roadmap.md`:
- Gap analysis: what's missing, what needs improvement
- Phased roadmap: Phase 1 (critical fixes), Phase 2 (major improvements), Phase 3 (enhancements)
- Selected hardening tracks and their items
- Applicability gate: each roadmap item must state constraint fit, mismatches, required evidence, and status (`Selected` / `Rejected` / `Experimental only` / `Needs user decision`)
**BLOCKING applicability gate**: Before 2c and 2d, every recommendation in the roadmap must be `Selected`. Items marked `Rejected` are excluded. Items marked `Experimental only` or `Needs user decision` require a user decision before task creation.
## 2c. Create Epic
@@ -79,6 +86,9 @@ Convert the finalized `RUN_DIR/list-of-changes.md` into implementable task files
**Self-verification**:
- [ ] All acceptance criteria are addressed in gap analysis
- [ ] Recommendations are grounded in actual code, not abstract
- [ ] Every recommendation has been checked against the Project Constraint Matrix
- [ ] No recommendation violates product restrictions, acceptance criteria, documented architecture decisions, or actual code integration boundaries
- [ ] Rejected and experimental approaches are documented but not converted into implementation tasks without user approval
- [ ] Roadmap phases are prioritized by impact
- [ ] Epic created and all tasks linked to it
- [ ] Every entry in list-of-changes.md has a corresponding task file in TASKS_DIR
@@ -23,6 +23,7 @@ Save as `RUN_DIR/list-of-changes.md`. Produced during Phase 1 (Discovery).
- **Problem**: [what makes this problematic / untestable / coupled]
- **Change**: [what to do — behavioral description, not implementation steps]
- **Rationale**: [why this change is needed]
- **Constraint Fit**: [which product constraints / acceptance criteria / integration boundaries this preserves; or "Rejected — violates ..."]
- **Risk**: [low | medium | high]
- **Dependencies**: [other change IDs this depends on, or "None"]
@@ -31,6 +32,7 @@ Save as `RUN_DIR/list-of-changes.md`. Produced during Phase 1 (Discovery).
- **Problem**: [description]
- **Change**: [description]
- **Rationale**: [description]
- **Constraint Fit**: [description]
- **Risk**: [low | medium | high]
- **Dependencies**: [C01, or "None"]
```
@@ -44,6 +46,8 @@ Save as `RUN_DIR/list-of-changes.md`. Produced during Phase 1 (Discovery).
- **File(s)** must reference actual files verified to exist in the codebase
- **Problem** describes the current state, not the desired state
- **Change** describes what the system should do differently — behavioral, not prescriptive
- **Constraint Fit** proves the change preserves confirmed product requirements, restrictions, acceptance criteria, architecture decisions, and integration contracts
- Do not include changes whose only benefit is structural cleanliness if they weaken required behavior or violate constraints; record those as rejected in analysis instead
- **Dependencies** reference other change IDs within this list; cross-run dependencies use tracker IDs
- In guided mode, the input file entries are validated against actual code and enriched with file paths, risk, and dependencies before writing
- In automatic mode, entries are derived from Phase 1 component analysis and Phase 2 research findings
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@@ -30,6 +30,7 @@ Transform vague topics raised by users into high-quality, deliverable research r
- **Internet-first investigation** — do not rely on training data for factual claims; search the web extensively for every sub-question, rephrase queries when results are thin, and keep searching until you have converging evidence from multiple independent sources
- **Multi-perspective analysis** — examine every problem from at least 3 different viewpoints (e.g., end-user, implementer, business decision-maker, contrarian, domain expert, field practitioner); each perspective should generate its own search queries
- **Question multiplication** — for each sub-question, generate multiple reformulated search queries (synonyms, related terms, negations, "what can go wrong" variants, practitioner-focused variants) to maximize coverage and uncover blind spots
- **Exact-fit component selection** — never select a component, tool, library, service, architecture pattern, or algorithm merely because it solves a similar class of problem. It must be proven compatible with the project's explicit operating context, constraints, required inputs/outputs, non-functional requirements, lifecycle assumptions, and acceptance criteria. If fit is unproven or mismatched, mark it `Rejected`, `Experimental only`, or escalate for user decision before it can shape the solution.
## Context Resolution
@@ -34,6 +34,8 @@
- [ ] Competitor analysis included: Existing solutions were researched
- [ ] All components have comparison tables: Each component lists alternatives with tools, advantages, limitations, security, cost
- [ ] Tools/libraries verified: Suggested tools actually exist and work as described
- [ ] Component fit matrix completed: `06_component_fit_matrix.md` exists and every selected component/tool/pattern is marked `Selected`
- [ ] No field-adjacent substitution: no selected candidate is chosen only because it solves a similar class of problem while failing the project's explicit constraints
- [ ] Testing strategy covers AC: Tests map to acceptance criteria
- [ ] Tech stack documented (if Phase 3 ran): `tech_stack.md` has evaluation tables, risk assessment, and learning requirements
- [ ] Security analysis documented (if Phase 4 ran): `security_analysis.md` has threat model and per-component controls
@@ -45,6 +47,8 @@
- [ ] New draft is self-contained: Written as if from scratch, no "updated" markers
- [ ] Performance column included: Mode B comparison tables include performance characteristics
- [ ] Previous draft issues addressed: Every finding in the table is resolved in the new draft
- [ ] Existing component fit audited: every old and new component/tool/pattern was checked against `restrictions.md`, `acceptance_criteria.md`, and the Project Constraint Matrix
- [ ] Rejected/experimental candidates are not lead recommendations unless the user explicitly accepted the risk
## Timeliness Check (High-Sensitivity Domain BLOCKING)
@@ -76,3 +80,14 @@ When the research topic has Critical or High sensitivity level:
- [ ] Cited facts have corresponding statements in the original text (no over-interpretation)
- [ ] Source publication/update dates annotated; technical docs include version numbers
- [ ] Unverifiable information annotated `[limited source]` and not sole support for core conclusions
## Exact-Fit Validation (BLOCKING)
- [ ] Project Constraint Matrix extracted from problem context before component selection
- [ ] Every selected component/tool/library/service/pattern/algorithm has evidence for required inputs/outputs and integration boundaries
- [ ] Every selected candidate has evidence for the operating context and lifecycle assumptions it must support
- [ ] Every selected candidate has evidence for non-functional targets that are binding for the project
- [ ] Known unsupported scenarios and failure reports were searched for every selected candidate
- [ ] Mismatches are recorded as disqualifiers, not softened into generic limitations
- [ ] Any candidate with unproven fit is marked `Experimental only` or escalated for user decision
- [ ] Any candidate with documented constraint conflict is marked `Rejected`
@@ -57,6 +57,7 @@ RESEARCH_DIR/
├── 03_comparison_framework.md # Step 4 output: selected framework and populated data
├── 04_reasoning_chain.md # Step 6 output: fact → conclusion reasoning
├── 05_validation_log.md # Step 7 output: use-case validation results
├── 06_component_fit_matrix.md # Step 7.5 output: component exact-fit gate
└── raw/ # Raw source archive (optional)
├── source_1.md
└── source_2.md
@@ -73,6 +74,7 @@ RESEARCH_DIR/
| Step 4 | Selected comparison framework + initial population | `03_comparison_framework.md` |
| Step 6 | Reasoning process for each dimension | `04_reasoning_chain.md` |
| Step 7 | Validation scenarios + results + review checklist | `05_validation_log.md` |
| Step 7.5 | Component exact-fit gate and selection status | `06_component_fit_matrix.md` |
| Step 8 | Complete solution draft | `OUTPUT_DIR/solution_draft##.md` |
### Save Principles
@@ -95,6 +97,7 @@ RESEARCH_DIR/
| `03_comparison_framework.md` | Selected framework and populated data | After Step 4 completion |
| `04_reasoning_chain.md` | Fact → conclusion reasoning | After Step 6 completion |
| `05_validation_log.md` | Use-case validation and review | After Step 7 completion |
| `06_component_fit_matrix.md` | Exact-fit matrix for every proposed component/tool/pattern with status `Selected` / `Rejected` / `Experimental only` / `Needs user decision` | Before Step 8 deliverable formatting |
| `OUTPUT_DIR/solution_draft##.md` | Complete solution draft | After Step 8 completion |
| `OUTPUT_DIR/tech_stack.md` | Tech stack evaluation and decisions | After Phase 3 (optional) |
| `OUTPUT_DIR/security_analysis.md` | Threat model and security controls | After Phase 4 (optional) |
@@ -73,16 +73,18 @@ Full 8-step research methodology. Produces the first solution draft.
**Task** (drives the 8-step engine):
1. Research existing/competitor solutions for similar problems — search broadly across industries and adjacent domains, not just the obvious competitors
2. Research the problem thoroughly — all possible ways to solve it, split into components; search for how different fields approach analogous problems
3. For each component, research all possible solutions and find the most efficient state-of-the-art approaches — use multiple query variants and perspectives from Step 1
4. For each promising approach, search for real-world deployment experience: success stories, failure reports, lessons learned, and practitioner opinions
5. Search for contrarian viewpoints — who argues against the common approaches and why? What failure modes exist?
6. Verify that suggested tools/libraries actually exist and work as described — check official repos, latest releases, and community health (stars, recent commits, open issues)
7. Include security considerations in each component analysis
8. Provide rough cost estimates for proposed solutions
3. Derive a **Project Constraint Matrix** before evaluating component options. Extract exact constraints from `problem.md`, `restrictions.md`, `acceptance_criteria.md`, input data notes, and the Phase 1 AC assessment. Include required inputs/outputs, operating context, runtime envelope, data availability, lifecycle boundaries, non-functional targets, integration boundaries, security constraints, and explicit out-of-scope decisions.
4. For each component, research all possible solutions and find the most efficient state-of-the-art approaches — use multiple query variants and perspectives from Step 1
5. For each promising approach, search for real-world deployment experience: success stories, failure reports, lessons learned, and practitioner opinions
6. Search for contrarian viewpoints — who argues against the common approaches and why? What failure modes exist?
7. Verify that suggested tools/libraries actually exist and work as described — check official repos, latest releases, and community health (stars, recent commits, open issues)
8. For every candidate component/tool/library/service/pattern/algorithm, prove exact fit against the Project Constraint Matrix. A field-adjacent solution is not selectable unless its documented implementation assumptions match the project's constraints. Mismatches must be recorded as disqualifiers and the candidate marked `Rejected`, `Experimental only`, or `Needs user decision`.
9. Include security considerations in each component analysis
10. Provide rough cost estimates for proposed solutions
Be concise in formulating. The fewer words, the better, but do not miss any important details.
**Save action**: Write `OUTPUT_DIR/solution_draft##.md` using template: `templates/solution_draft_mode_a.md`
**Save action**: Write `RESEARCH_DIR/06_component_fit_matrix.md` before the final draft, then write `OUTPUT_DIR/solution_draft##.md` using template: `templates/solution_draft_mode_a.md`
---
@@ -10,18 +10,25 @@ Full 8-step research methodology applied to assessing and improving an existing
**Task** (drives the 8-step engine):
1. Read the existing solution draft thoroughly
2. Research in internet extensively — for each component/decision in the draft, search for:
2. Derive or refresh the **Project Constraint Matrix** from all files in INPUT_DIR. Include required inputs/outputs, operating context, runtime envelope, data availability, lifecycle boundaries, non-functional targets, integration boundaries, security constraints, and explicit out-of-scope decisions.
3. Audit every component/decision in the existing draft against the Project Constraint Matrix before researching alternatives:
- If a component's documented implementation assumptions match the project constraints, keep it eligible and record evidence.
- If fit is unproven, mark it `Experimental only` until evidence is found.
- If constraints conflict, mark it `Rejected` and search for alternatives.
- If rejecting it changes product behavior or risk materially, escalate for user decision.
4. Research in internet extensively — for each component/decision in the draft, search for:
- Known problems and limitations of the chosen approach
- What practitioners say about using it in production
- Better alternatives that may have emerged recently
- Common failure modes and edge cases
- How competitors/similar projects solve the same problem differently
3. Search specifically for contrarian views: "why not [chosen approach]", "[chosen approach] criticism", "[chosen approach] failure"
4. Identify security weak points and vulnerabilities — search for CVEs, security advisories, and known attack vectors for each technology in the draft
5. Identify performance bottlenecks — search for benchmarks, load test results, and scalability reports
6. For each identified weak point, search for multiple solution approaches and compare them
7. Based on findings, form a new solution draft in the same format
5. Search specifically for contrarian views: "why not [chosen approach]", "[chosen approach] criticism", "[chosen approach] failure"
6. Identify security weak points and vulnerabilities — search for CVEs, security advisories, and known attack vectors for each technology in the draft
7. Identify performance bottlenecks — search for benchmarks, load test results, and scalability reports
8. For each identified weak point, search for multiple solution approaches and compare them
9. For every revised candidate, prove exact fit against the Project Constraint Matrix. Do not select field-adjacent or "similar problem" options unless their intrinsic implementation constraints match the project.
10. Based on findings, form a new solution draft in the same format
**Save action**: Write `OUTPUT_DIR/solution_draft##.md` (incremented) using template: `templates/solution_draft_mode_b.md`
**Save action**: Write `RESEARCH_DIR/06_component_fit_matrix.md` before the final draft, then write `OUTPUT_DIR/solution_draft##.md` (incremented) using template: `templates/solution_draft_mode_b.md`
**Optional follow-up**: After Mode B completes, the user can request Phase 3 (Tech Stack Consolidation) or Phase 4 (Security Deep Dive) using the revised draft. These phases work identically to their Mode A descriptions in `steps/01_mode-a-initial-research.md`.
@@ -94,6 +94,9 @@ When decomposing questions, you must explicitly define the **boundaries of the r
| **Geography** | Which region is being studied? | Chinese universities vs US universities vs global |
| **Timeframe** | Which period is being studied? | Post-2020 vs full historical picture |
| **Level** | Which level is being studied? | Undergraduate vs graduate vs vocational |
| **Operating context** | What exact environment, lifecycle phase, and runtime conditions must the solution support? | In-flight embedded runtime vs offline post-processing; production web traffic vs admin batch job |
| **Required interfaces** | What inputs, outputs, protocols, data shapes, and ownership boundaries are fixed? | One camera vs stereo rig; REST API vs message queue; local file boundary vs service API |
| **Non-functional envelope** | What latency, throughput, storage, memory, availability, safety, security, cost, and maintainability targets are binding? | <400 ms p95, 8 GB RAM, 99.9% availability, reversible migrations |
**Common mistake**: User asks about "university classroom issues" but sources include policies targeting "K-12 students" — mismatched target populations will invalidate the entire research.
@@ -116,6 +119,7 @@ Record the audit result in `00_question_decomposition.md` as a "Completeness Aud
- Summary of relevant problem context from INPUT_DIR
- Classified question type and rationale
- **Research subject boundary definition** (population, geography, timeframe, level)
- **Project Constraint Matrix summary** (operating context, required interfaces, non-functional envelope, lifecycle assumptions, and hard disqualifiers extracted from input files)
- List of decomposed sub-questions
- **Chosen perspectives** (at least 3 from the Perspective Rotation table) with rationale
- **Search query variants** for each sub-question (at least 3-5 per sub-question)
@@ -145,12 +149,23 @@ Do not stop at the first few results. The goal is to build a comprehensive evide
- Consult at least **2 different source tiers** per sub-question (e.g., L1 official docs + L4 community discussion)
- If initial searches yield fewer than 3 relevant sources for a sub-question, **broaden the search** with alternative terms, related domains, or analogous problems
**Candidate implementation-limit searches (MANDATORY)**:
For every component/tool/library/service/pattern/algorithm that may be selected or recommended, search for its intrinsic implementation constraints. Do not rely on product category labels, marketing summaries, or examples from a different operating context. Include query variants for:
- Official supported inputs/outputs, protocols, data formats, and deployment modes
- Required hardware/runtime/platform/version constraints
- Timing, throughput, memory, storage, synchronization, and scaling assumptions
- Lifecycle assumptions: offline vs online, batch vs real time, development vs production, single tenant vs multi tenant, local vs networked
- Known unsupported scenarios, limitations, issue reports, production failures, and workarounds
- Licensing, security, maintenance, and community-health constraints
- Exact phrases from the project's restrictions and acceptance criteria combined with the candidate name
**Search broadening strategies** (use when results are thin):
- Try adjacent fields: if researching "drone indoor navigation", also search "robot indoor navigation", "warehouse AGV navigation"
- Try different communities: academic papers, industry whitepapers, military/defense publications, hobbyist forums
- Try different geographies: search in English + search for European/Asian approaches if relevant
- Try historical evolution: "history of X", "evolution of X approaches", "X state of the art 2024 2025"
- Try failure analysis: "X project failure", "X post-mortem", "X recall", "X incident report"
- Try disqualifier probes: "X unsupported", "X limitations", "X requirements", "X with [project constraint]", "X without [required input]", "X real-time [target]", "X production failure"
**Search saturation rule**: Continue searching until new queries stop producing substantially new information. If the last 3 searches only repeat previously found facts, the sub-question is saturated.
@@ -194,6 +209,7 @@ For each extracted fact, **immediately** append to `02_fact_cards.md`:
- **Target Audience**: [which group this fact applies to, inherited from source or further refined]
- **Confidence**: ✅/⚠️/❓
- **Related Dimension**: [corresponding comparison dimension]
- **Fit Impact**: [supports selection / disqualifies / makes experimental / needs user decision]
```
**Target audience in fact statements**:
@@ -24,6 +24,15 @@ Write to `03_comparison_framework.md`:
| ... | | | |
```
**Required exact-fit dimensions for component/tool decisions**:
When the output selects or recommends a component, tool, library, service, architecture pattern, or algorithm, the framework MUST include these dimensions unless explicitly not applicable:
- Required inputs/outputs and ownership boundaries
- Operating context and lifecycle fit
- Non-functional envelope fit
- Implementation assumptions and hard disqualifiers
- Evidence quality and source tier
- Selection status (`Selected`, `Rejected`, `Experimental only`, `Needs user decision`)
---
### Step 5: Reference Point Baseline Alignment
@@ -97,6 +106,8 @@ Validate conclusions against a typical scenario:
- [ ] Are there any important dimensions missed?
- [ ] Is there any over-extrapolation?
- [ ] Are conclusions actionable/verifiable?
- [ ] Does every selected component/tool/pattern match the Project Constraint Matrix?
- [ ] Are mismatches marked as disqualifiers instead of hidden as generic "limitations"?
**Save action**:
Write to `05_validation_log.md`:
@@ -128,6 +139,31 @@ If using Y: [expected behavior]
---
### Step 7.5: Component Applicability Gate (BLOCKING)
Before finalizing the solution draft, build an exact-fit matrix for every component/tool/library/service/pattern/algorithm that is selected, recommended, rejected, or treated as a fallback.
```markdown
# Component Fit Matrix
| Candidate | Intended Role | Project Constraints Checked | Evidence | Mismatches / Disqualifiers | Status | Decision Rationale |
|-----------|---------------|-----------------------------|----------|----------------------------|--------|--------------------|
| [name] | [role] | [constraints] | [Fact # / Source #] | [none / list] | Selected / Rejected / Experimental only / Needs user decision | [why] |
```
Rules:
- `Selected` is allowed only when the candidate's documented implementation assumptions match the project's explicit constraints and acceptance criteria.
- `Experimental only` is required when a candidate might work but lacks proof for the exact operating context.
- `Rejected` is required when documented assumptions conflict with project constraints.
- `Needs user decision` is required when a mismatch changes scope, cost, safety, product behavior, or acceptance criteria.
- A candidate may not appear as the lead solution in Step 8 unless this gate marks it `Selected`.
**Save action**: Write `06_component_fit_matrix.md`.
**BLOCKING**: If any lead candidate is `Experimental only`, `Rejected`, or `Needs user decision`, do not silently proceed. Ask the user or choose a different selected candidate.
---
### Step 8: Deliverable Formatting
Make the output **readable, traceable, and actionable**.
@@ -14,8 +14,13 @@
| Solution | Tools | Advantages | Limitations | Requirements | Security | Cost | Fit |
|----------|-------|-----------|-------------|-------------|----------|------|-----|
| [Option 1] | [lib/platform] | [pros] | [cons] | [reqs] | [security] | [cost] | [fit assessment] |
| [Option 2] | [lib/platform] | [pros] | [cons] | [reqs] | [security] | [cost] | [fit assessment] |
| [Option 1] | [lib/platform] | [pros] | [cons] | [intrinsic requirements] | [security] | [cost] | [Selected / Rejected / Experimental only / Needs user decision — cite exact-fit evidence and disqualifiers] |
| [Option 2] | [lib/platform] | [pros] | [cons] | [intrinsic requirements] | [security] | [cost] | [Selected / Rejected / Experimental only / Needs user decision — cite exact-fit evidence and disqualifiers] |
**Exact-fit evidence**:
- Project constraints checked: [inputs/outputs, operating context, lifecycle, NFRs, acceptance criteria]
- Evidence: [Fact # / Source #]
- Disqualifiers: [none or list]
[Repeat per component]
@@ -17,8 +17,13 @@
| Solution | Tools | Advantages | Limitations | Requirements | Security | Performance | Fit |
|----------|-------|-----------|-------------|-------------|----------|------------|-----|
| [Option 1] | [lib/platform] | [pros] | [cons] | [reqs] | [security] | [perf] | [fit assessment] |
| [Option 2] | [lib/platform] | [pros] | [cons] | [reqs] | [security] | [perf] | [fit assessment] |
| [Option 1] | [lib/platform] | [pros] | [cons] | [intrinsic requirements] | [security] | [perf] | [Selected / Rejected / Experimental only / Needs user decision — cite exact-fit evidence and disqualifiers] |
| [Option 2] | [lib/platform] | [pros] | [cons] | [intrinsic requirements] | [security] | [perf] | [Selected / Rejected / Experimental only / Needs user decision — cite exact-fit evidence and disqualifiers] |
**Exact-fit evidence**:
- Project constraints checked: [inputs/outputs, operating context, lifecycle, NFRs, acceptance criteria]
- Evidence: [Fact # / Source #]
- Disqualifiers: [none or list]
[Repeat per component]