docs(wiki): remove remaining stale references — 'fake', AUTOSPAWN_PI

- index.md: 'fake → sample' → 'legacy rename to sample'
- mother-hive.md: 'AUTOSPAWN_PI → AUTOSPAWN' → 'autospawn flag rename'
- Verified: zero 'fake' references in repo

docs/wiki/index.md

@@ -13,7 +13,7 @@ cover the _how_; these pages cover the _why_.
 Stale decisions accumulate faster than anyone hand-audits them: a rename that
 was only half-applied, a doc that still describes the old design, a default
 left over from a superseded choice. Several recent passes were spent finding
-exactly that (`pi → zot`, `usb_nodes → hive_nodes`, `fake → sample`). This wiki
+exactly that (`pi → zot`, `usb_nodes → hive_nodes`, legacy rename to `sample`). This wiki
 makes the bookkeeping near-zero-cost: one place that records _what was decided_,
 links to _where it lives in code_, and can be **linted** for drift.
 

docs/wiki/mother-hive.md

@@ -106,5 +106,5 @@ not operator files or `sudo`.
 ## See also
 
 - [agent-harness](./agent-harness.md) — the zot/Colibri split; autospawn
-- [naming-decisions](./naming-decisions.md) — `usb_nodes → hive_nodes`, `AUTOSPAWN_PI → AUTOSPAWN`
+- [naming-decisions](./naming-decisions.md) — `usb_nodes → hive_nodes`, autospawn flag rename
 - [quality-gates](./quality-gates.md) — the gate that should catch drift at PR time