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id: design: per-target customisation system (from #5679) #5854
Description
Summary
Follow-on design ticket from #5679 — its decomposition sketch names this as a separate design, and the parent's acceptance requires these tickets to be filed and linked. Filed in the 2026-11-04 gap pass (WS-F) so the design work exists and can be prioritised on its own merits; implementation timing is a separate decision, possibly months out.
What this design must settle
Themes, override maps, asset substitution, and conditional blocks, proven against the parent's worked three-target example.
Context from the parent
The parent design fixes the semantic markup + style-assertion model by which programs-as-websites render across web, native, and custom targets. The parent issue carries the surrounding decisions this ticket must not re-decide; where this ticket's answer would change a parent decision, record that explicitly rather than silently forking it.
Decision record expected
Close this design with a recorded decision (on this issue or in a doc/ record linked from it): the chosen shape, the alternatives rejected and why, and the invariants implementation must hold. If the design splits further, file the splits and link them here rather than growing this issue.
Relations
Parent: #5679. Programme: epic #2056. Filed by WS-F (2026-11-04 ID design gap & expansion pass).
Activity
developing-today commentedon Nov 5, 2026
CODE-1537
dezren39 commentedon Nov 5, 2026
🤖 Agent note · handed off
dezren39 commentedon Nov 5, 2026
agent-note:v1
task: 10257
lane: code-u
state: handed-off
summary: Task 10257 claimed by lane code-u; execution-lane assignment returned opencode, so this task is handed off to the opencode claimant per the worker runbook §1b. Issue #5854 is OPEN with no hard-stop labels on fresh check; stale queue/parked + status/parked labels from an earlier park were replaced with queue/claimed + status/in-progress on claim.
next: opencode-claimant launches the bound opencode session for task 10257.
dezren39 commentedon Nov 5, 2026
agent-note:v1
task: 10257
lane: 7b47536b-c162-444c-be8a-3a9538cc4cb5
state: picked-up
summary: Task 10257 is now claimed by the OpenChamber scheduled lane; the required claim labels are already present. Current main was fast-forwarded to 2801e36.
next: check related issue and PR state, then record the triage route.
dezren39 commentedon Nov 5, 2026
agent-note:v1
task: 10257
state: done (triaged)
lane: 7b47536b-c162-444c-be8a-3a9538cc4cb5
summary: Triage verified at current main 2801e36. #5854 remains open; no PR references it. Its parent #5679 is open and its decomposition includes this issue.
Dependency order (verified live on 2026-11-05):
This is a design-routing issue, not a runtime defect to reproduce. No Drew-only decision is needed for this ordering; implementation timing remains a separate prioritisation decision.