v2.1.5

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• Regenerate two capability schema docs that block the release (#6637)
• Keep Modal's SDK out of the MCP bundle (#6616)
• Lock Tacho and Stella enrollments with an Ed25519 certificate in place of the shared HMAC secret, so a changed enrollment shows (#6604)
• Show the horizontal lockup as Oxagen's logo (#6618)
• Serve a steering record at /steering/sources/record/<lineage> (#6605)
• Rename the Ontologies blog pillar to Code graphs (#6617)
• Index PHP with scip-php in the SCIP sandbox image (#6615)
• Move multi-sentence help into a help tooltip, and widen mockup dialogs 2.25 times (#6600)
• Stop a steering PR merge from reporting a refusal after GitHub merged it (#6611)
• Build the local code graph like the cloud: Stella entry, local SCIP indexers, shared indexes, history and parity (#6603)
• Type the last not-found refusals, pin the agent approval matrix, and record the kernel decisions (#6608)
• Fix steering, runs, attribution, work and Modal sandbox gaps (#6610)
• Lock each local tool discovery, and refuse one that is not locked (#6606)
• Widen each mockup switch's open list to its longest option (#6602)
• Size the mockup switches panel to its controls (#6597)
• Draw every record's history through one RecordHistory component (#6593)
• Cap stella's rationale rewrite at propose_record's 1,000 characters (#6595)
• Remove Vera, witness runs, done records and OpenCode (#6590)
• Fix the merge state in work item history and two create wizard defects (#6591)
• stella drafts the steering record and skill wizards on one RecordWizard (#6588)
• Draw Spend's figures and charts from one dashboard kit (#6589)
• Paint the marks' gold part gold-deep on bone, as the kit does (#6586)
• Mockup app that renders the product's pages in Oxide, and the Oxide component package (#6569)
• Bring the shared library and the app's brand files to the Oxide kit (#6574)
• [M1-3] Open the onboarding wrap and run screens from the gate rail (#6580)
• Put the orbit field in the site and docs heroes, and set headings on the kit's steps (#6583)
• Keep many model credentials per harness and switch accounts when one runs out of usage (#6563)
• Drop data nothing writes and settings that change nothing (#6560)
• Stop retrying a "not found" from the code host in discovery and steering sync (#6565)
• Move oxagen.sh, the docs, and the desktop app to the Oxide brand (#6568)
• Render the app's real shell and Work page in a mockup app (#6566)
• Read the pull request backfill's range without min() on a uuid (#6561)
• feat(work): open the source issue from a button on the work item page (#6556)
• Lock each local MCP server's launch in its call envelope (#6548)
• Stop the run page from scrolling past the shell into blank space (#6546)
• fix(agent): classify the assistant's model-call failures by HTTP status (#6557)
• Leave Claude Code's internal runs out of a run's subagents (#6508)
• Skip Cedar's evaluator when no steering tree has policies (#6534)
• Give every list table one layout: readable headers, aligned rows, clear columns (#6293)
• Record code graph build requests without reading xmax (#6381)

And 87 more, in the commit log.