docs(init): initialize OpenYield (1 phases)

---ci---
project: oy
phase: 0
milestone: v0.1
status: specify
decisions:
  - id: D-001
    decision: Autonomy level set to full
    rationale: Requested by user
    confidence: 1.0
    alternatives: [supervised, guided]
---/ci---

Specification: Create a multiproject called OpenYield (OY) where each subsystem is an individual project.
Requirements: Create Gitea group oy at git.cloudinit.dev; subsystems in individual repos.
Constraints: CIAgent workflow, multi-project mode.
Out of scope: Subsystem implementation.

.ciagent/CHECKPOINT.json

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+{
+  "phase": 0,
+  "stage": "specify",
+  "milestone": "v1.0",
+  "phase_role": "pre_execution"
+}

.ciagent/config.json

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+{
+  "projects": [
+    {
+      "slug": "oy",
+      "name": "OpenYield"
+    }
+  ],
+  "active_project": "oy",
+  "autonomy": {
+    "level": "full",
+    "escalation_hooks": ["deploy", "delete_data", "merge_to_main"],
+    "decision_confidence_threshold": 0.6,
+    "max_revision_iterations": 3,
+    "clarify_budget": 10
+  },
+  "release": {
+    "forge": "gitea",
+    "base_url": "git.cloudinit.dev",
+    "owner": "oy",
+    "repo": "openyield"
+  }
+}

.ciagent/oy/ARCHITECTURE.md

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+# Architecture: OpenYield (oy)
+
+TBD - Waiting for architecture documents.

.ciagent/oy/PROJECT.md

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+# Project: OpenYield (oy)
+
+## Objective
+Create a multiproject called OpenYield. OY is the system name, but each subsystem will be developed as individual projects.
+
+## Requirements
+- Create a new owner group in Gitea at git.cloudinit.dev/oy.
+- Each subsystem will have its own repository within this group.
+
+## Constraints
+- Must follow CIAgent initialization workflow.
+- Use multi-project mode in `.ciagent/config.json`.
+
+## Out of Scope
+- Actual implementation of subsystems (waiting for vision + architecture docs).

.ciagent/oy/REQUIREMENTS.md

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+# Requirements: OpenYield (oy)
+
+| ID | Requirement | Priority | Status |
+|----|-------------|----------|--------|
+| REQ-001 | System must be organized as a multiproject with OY as the umbrella. | High | Pending |
+| REQ-002 | Owner group `oy` must be created at git.cloudinit.dev. | High | Pending |
+| REQ-003 | Each subsystem must have a dedicated repository. | High | Pending |

.ciagent/oy/ROADMAP.md

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+# Roadmap: OpenYield (oy)
+
+## Phase 0: Pre-Execution
+- [x] Initialize CIAgent project
+- [ ] Ingest vision and architecture documents
+- [ ] Define subsystem projects
+
+## Phase 1: Specification
+- [ ] Detailed subsystem specifications

.gitignore

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+.env
+.env.secrets
+.env.*
+.ciagent/.env.secrets