docs: position fable-agent against workflow wrappers

docs/competition.md

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+# Competition: FableCodex / pi-fable / fable-agent
+
+## Positioning
+
+```text
+FableCodex and pi-fable add Fable-style workflow discipline.
+fable-agent adds the missing verification substrate: typed attestations, security scanners, risk gates, and guarded deploy receipts.
+```
+
+## Market map
+
+| Project | Layer | Strength | fable-agent wedge |
+|---|---|---|---|
+| FableCodex | Codex workflow skill | Inspect-first, goal ledger, evidence before done | Runtime-independent attestations and security checks |
+| pi-fable | Pi package / subagent workflow | Pi-native routing, findings gate, verifier agents | Factory-aware verification, deploy route evidence, typed receipts |
+| fable-agent | Verification/control plane | Receipts, AST/glyph/content safety, verify-cycle, guarded deploy | Proves agent work instead of only guiding it |
+
+## Product category
+
+**Agentic attestation infrastructure.**
+
+Not an AI factory. Not an orchestrator marketplace. Not a model unlocker.
+
+fable-agent verifies agent work with:
+
+- typed attestation schema: `fable.verification.attestation.v1`
+- verified vs unverified claim separation
+- AST structural capability scanner
+- glyph/covert-channel scanner
+- content safety and adaptive reframing gate
+- build/test/docs checks
+- risk-based human review gate
+- guarded deploy route recording
+
+## Strategic contrast
+
+### FableCodex says
+
+> Make Codex behave more carefully.
+
+### pi-fable says
+
+> Make Pi subagents behave more carefully.
+
+### fable-agent says
+
+> Prove what agent work did, what verified it, what risk remains, and whether guarded deploy is allowed.
+
+## Deploy fact discipline
+
+For fable-agent guarded deploy decisions:
+
+- current route: `8099/deploy via git-proxy`
+- legacy/stale direct deploy service: `8098 deploy-webhook`
+- memory is not proof; receipts are proof
+
+## Default command
+
+```bash
+fable-agent verify . --out .fable/attestations/latest.json
+```
+
+or:
+
+```bash
+fable-agent factory verify . --out .fable/attestations/factory-latest.json
+```
+
+## Do not copy
+
+Do not copy competitor ceremony unless it creates proof. Avoid:
+
+- bigger ledgers for their own sake
+- dashboard before receipts are boring green
+- marketplace before typed objects are stable
+- generic self-healing claims without degraded-repair receipts
+- direct legacy `8098` deploy assumptions