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.opencode/skills/sequential-thinking/SKILL.md

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+---
+name: ck:sequential-thinking
+description: Apply step-by-step analysis for complex problems with revision capability. Use for multi-step reasoning, hypothesis verification, adaptive planning, problem decomposition, course correction.
+license: MIT
+argument-hint: "[problem to analyze step-by-step]"
+metadata:
+  author: claudekit
+  version: "1.0.0"
+---
+
+# Sequential Thinking
+
+Structured problem-solving via manageable, reflective thought sequences with dynamic adjustment.
+
+## When to Apply
+
+- Complex problem decomposition
+- Adaptive planning with revision capability
+- Analysis needing course correction
+- Problems with unclear/emerging scope
+- Multi-step solutions requiring context maintenance
+- Hypothesis-driven investigation/debugging
+
+## Core Process
+
+### 1. Start with Loose Estimate
+```
+Thought 1/5: [Initial analysis]
+```
+Adjust dynamically as understanding evolves.
+
+### 2. Structure Each Thought
+- Build on previous context explicitly
+- Address one aspect per thought
+- State assumptions, uncertainties, realizations
+- Signal what next thought should address
+
+### 3. Apply Dynamic Adjustment
+- **Expand**: More complexity discovered → increase total
+- **Contract**: Simpler than expected → decrease total
+- **Revise**: New insight invalidates previous → mark revision
+- **Branch**: Multiple approaches → explore alternatives
+
+### 4. Use Revision When Needed
+```
+Thought 5/8 [REVISION of Thought 2]: [Corrected understanding]
+- Original: [What was stated]
+- Why revised: [New insight]
+- Impact: [What changes]
+```
+
+### 5. Branch for Alternatives
+```
+Thought 4/7 [BRANCH A from Thought 2]: [Approach A]
+Thought 4/7 [BRANCH B from Thought 2]: [Approach B]
+```
+Compare explicitly, converge with decision rationale.
+
+### 6. Generate & Verify Hypotheses
+```
+Thought 6/9 [HYPOTHESIS]: [Proposed solution]
+Thought 7/9 [VERIFICATION]: [Test results]
+```
+Iterate until hypothesis verified.
+
+### 7. Complete Only When Ready
+Mark final: `Thought N/N [FINAL]`
+
+Complete when:
+- Solution verified
+- All critical aspects addressed
+- Confidence achieved
+- No outstanding uncertainties
+
+## Application Modes
+
+**Explicit**: Use visible thought markers when complexity warrants visible reasoning or user requests breakdown.
+
+**Implicit**: Apply methodology internally for routine problem-solving where thinking aids accuracy without cluttering response.
+
+## Scripts (Optional)
+
+Optional scripts for deterministic validation/tracking:
+- `scripts/process-thought.js` - Validate & track thoughts with history
+- `scripts/format-thought.js` - Format for display (box/markdown/simple)
+
+See README.md for usage examples. Use when validation/persistence needed; otherwise apply methodology directly.
+
+## References
+
+Load when deeper understanding needed:
+- `references/core-patterns.md` - Revision & branching patterns
+- `references/examples-api.md` - API design example
+- `references/examples-debug.md` - Debugging example
+- `references/examples-architecture.md` - Architecture decision example
+- `references/advanced-techniques.md` - Spiral refinement, hypothesis testing, convergence
+- `references/advanced-strategies.md` - Uncertainty, revision cascades, meta-thinking