feat(skills): add autoresearch skill for autonomous research orchestration

Add a new research skill that enables continuous, self-directed research
with a two-loop architecture:

- Inner loop: Rapid experiment iteration with measurable outcomes
- Outer loop: Periodic synthesis, pattern discovery, and direction setting

Features:
- Research workspace templates (state, findings, log)
- Example project (LoRA rank study)
- Configuration options for loop intervals and auto-commit
- Integration with existing research skills (arxiv, paper-writing)

Updated research/DESCRIPTION.md to include autoresearch in the skill overview.

skills/research/autoresearch/templates/research-log.md

@@ -0,0 +1,90 @@
+# Research Log: {{PROJECT_NAME}}
+
+**Research Question:** {{RESEARCH_QUESTION}}
+
+---
+
+## Bootstrap Phase
+
+### {{DATE}} — Project Initialization
+
+- **Action:** Created workspace, initialized state files
+- **Research Question:** {{RESEARCH_QUESTION}}
+- **Initial Thoughts:** [What makes this interesting?]
+
+### {{DATE}} — Literature Search
+
+- **Sources:** arxiv, semantic scholar, web search
+- **Key Papers:**
+  - [Paper 1] — [Key finding relevant to question]
+  - [Paper 2] — [Key finding]
+- **Gap Identified:** [What's missing in existing work?]
+
+### {{DATE}} — Hypothesis Formation
+
+- **H001:** [Description] → Prediction: [Specific prediction]
+- **H002:** [Description] → Prediction: [Specific prediction]
+- **H003:** [Description] → Prediction: [Specific prediction]
+
+---
+
+## Inner Loop Log
+
+### {{DATE}} — Experiment H001
+
+- **Hypothesis:** H001
+- **Protocol:** [What was changed, what was predicted]
+- **Git Commit:** `research(protocol): H001 — [description]`
+- **Status:** [Running/Completed/Failed]
+- **Results:**
+  - Metric: [Value]
+  - Baseline: [Value]
+  - Delta: [+/-X]
+- **Interpretation:** [What this means]
+- **Next Action:** [Continue/Adjust/Pivot]
+
+### {{DATE}} — Experiment H002
+
+[Same format...]
+
+---
+
+## Outer Loop Log
+
+### {{DATE}} — Reflection #1 (After {{N}} experiments)
+
+- **Experiments Reviewed:** H001-H00N
+- **Patterns Observed:**
+  - [Pattern 1]
+  - [Pattern 2]
+- **Updated Understanding:** [New insights]
+- **Direction Decision:** [DEEPEN/BROADEN/PIVOT/CONCLUDE]
+- **Rationale:** [Why this direction?]
+- **New Hypotheses:**
+  - H00N+1: [Description]
+  - H00N+2: [Description]
+
+---
+
+## Direction Changes
+
+### {{DATE}} — PIVOT: [New Direction]
+
+- **From:** [Old direction/assumption]
+- **To:** [New direction]
+- **Trigger:** [What result/surprise caused this?]
+- **New Research Question:** [If changed]
+
+---
+
+## Conclusion
+
+### {{DATE}} — Research Concluded
+
+- **Final Status:** [Completed/Partial/Abandoned]
+- **Key Findings:**
+  1. [Finding 1]
+  2. [Finding 2]
+- **Contribution:** [What this adds to the field]
+- **Limitations:** [What we didn't test/couldn't conclude]
+- **Future Work:** [What someone should do next]