| # Cross-User Workspace Policy v3.3 |
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| ## Rule |
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| The shared Substrate mechanism is not the same thing as a shared writable source. |
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| Each user/session/GPT route receives a workspace boundary. |
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| ## Workspace layers |
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| ```text |
| Public read layer |
| Private user/session workspace |
| Collaborative overlay proposal queue |
| Human-reviewed canonical update route |
| ``` |
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| ## Writes allowed |
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| Allowed: |
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| ```text |
| workspace output |
| audit logs |
| receipts |
| collaborative overlay proposals |
| lexicon overlay proposals |
| ``` |
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| Not allowed: |
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| ```text |
| direct canonical artifact mutation |
| direct canonical Primordial Lexicon mutation |
| public contribution treated as accepted source |
| unreviewed AI output treated as closure |
| ``` |
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| ## Contributor credit |
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| Every contribution capsule should preserve: |
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| ```text |
| human/session contributor |
| AI adapter contributor |
| source nodes referenced |
| review state |
| write scope |
| receipt |
| ``` |
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