chore(spec): refresh the in-tree surface anchor onto the post-merge baseline (#5235)

`git merge origin/main` brought #5289 / #5293 / #5296 / #5300, three of which
change the authorable surface (theme token tombstones, the HttpServerConfig
removal, the NotificationAction / EmbedConfig removals). The anchor is written
from the merge base, so it moves with it: baseRev 88b9b2d → 26e1029, 8045 → 8016
keys, regenerated by `gen:schema` rather than text-merged — this file is on the
os-regen list precisely because a textual merge of it means nothing.

Verified line-for-line against `git show 26e1029:packages/spec/authorable-surface.json`,
and the siblings' entries survived in it: `ui/Theme:animation [RETIRED]` /
`ui/Theme:zIndex [RETIRED]` are carried, HttpServerConfig / NotificationAction /
EmbedConfig are gone from every generated witness at once.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ErbEDVAg1No9gdg1pgDAGB

Author: claude

packages/spec/authorable-surface.base.json

@@ -1,6 +1,6 @@
 {
   "description": "In-tree anchor for the authorable-surface deletion gate (#4650, #5235): a verbatim copy of the keys in authorable-surface.json as they stood at `baseRev`, a commit on origin/main. A build that CAN reach origin/main anchors on the merge base instead, and re-verifies this file against `baseRev` — so a PR that edits it to hide a deletion goes red wherever the network exists. A build that CANNOT reach GitHub (image-build stages, air-gapped, fork, historical-tag reproduction) anchors here instead of failing. Written only by `gen:schema`, only from a git-resolved baseline — never from the build that is being checked. See #5235.",
-  "baseRev": "88b9b2d5cc8da79aa7d45d6e610959568baea9a2",
+  "baseRev": "26e1029f5cdf7f63719e3f58eb661b19f65b78fe",
   "keys": [
     "ai/AIModelConfig:maxTokens",
     "ai/AIModelConfig:model",
@@ -5912,15 +5912,6 @@
     "system/HttpDestinationConfig:retry",
     "system/HttpDestinationConfig:timeout",
     "system/HttpDestinationConfig:url",
-    "system/HttpServerConfig:bodyLimit",
-    "system/HttpServerConfig:compression",
-    "system/HttpServerConfig:cors",
-    "system/HttpServerConfig:host",
-    "system/HttpServerConfig:port",
-    "system/HttpServerConfig:requestTimeout",
-    "system/HttpServerConfig:security",
-    "system/HttpServerConfig:static",
-    "system/HttpServerConfig:trustProxy",
     "system/Incident:affectedDataClassifications",
     "system/Incident:affectedSystems",
     "system/Incident:category",
@@ -6924,8 +6915,6 @@
     "ui/AddRecordConfig:formView",
     "ui/AddRecordConfig:mode",
     "ui/AddRecordConfig:position",
-    "ui/Animation:duration",
-    "ui/Animation:timing",
     "ui/App:_lock",
     "ui/App:_lockDocsUrl",
     "ui/App:_lockReason",
@@ -7301,13 +7290,6 @@
     "ui/ElementTextProps:aria",
     "ui/ElementTextProps:content",
     "ui/ElementTextProps:variant",
-    "ui/EmbedConfig:allowedOrigins",
-    "ui/EmbedConfig:enabled",
-    "ui/EmbedConfig:height",
-    "ui/EmbedConfig:responsive",
-    "ui/EmbedConfig:showHeader",
-    "ui/EmbedConfig:showNavigation",
-    "ui/EmbedConfig:width",
     "ui/FocusManagement:arrowNavigation",
     "ui/FocusManagement:focusTrap",
     "ui/FocusManagement:focusVisible",
@@ -7595,9 +7577,6 @@
     "ui/NavigationContribution:group",
     "ui/NavigationContribution:items",
     "ui/NavigationContribution:priority",
-    "ui/NotificationAction:action",
-    "ui/NotificationAction:label",
-    "ui/NotificationAction:variant",
     "ui/NumberFormat:currency",
     "ui/NumberFormat:maximumFractionDigits",
     "ui/NumberFormat:minimumFractionDigits",
@@ -7895,7 +7874,7 @@
     "ui/SyncConfig:maxRetries",
     "ui/SyncConfig:retryInterval",
     "ui/SyncConfig:strategy",
-    "ui/Theme:animation",
+    "ui/Theme:animation [RETIRED]",
     "ui/Theme:borderRadius",
     "ui/Theme:colors",
     "ui/Theme:customVars",
@@ -7906,7 +7885,7 @@
     "ui/Theme:name",
     "ui/Theme:shadows",
     "ui/Theme:typography",
-    "ui/Theme:zIndex",
+    "ui/Theme:zIndex [RETIRED]",
     "ui/TimelineConfig:colorField",
     "ui/TimelineConfig:endDateField",
     "ui/TimelineConfig:groupByField",
@@ -7934,10 +7913,10 @@
     "ui/TreeConfig:labelField",
     "ui/TreeConfig:parentField",
     "ui/Typography:fontFamily",
-    "ui/Typography:fontSize",
-    "ui/Typography:fontWeight",
-    "ui/Typography:letterSpacing",
-    "ui/Typography:lineHeight",
+    "ui/Typography:fontSize [RETIRED]",
+    "ui/Typography:fontWeight [RETIRED]",
+    "ui/Typography:letterSpacing [RETIRED]",
+    "ui/Typography:lineHeight [RETIRED]",
     "ui/UrlNavItem:badge",
     "ui/UrlNavItem:badgeVariant",
     "ui/UrlNavItem:icon",
@@ -8038,14 +8017,6 @@
     "ui/WidgetProperty:name",
     "ui/WidgetProperty:required",
     "ui/WidgetProperty:type",
-    "ui/WidgetProperty:validation",
-    "ui/ZIndex:base",
-    "ui/ZIndex:dropdown",
-    "ui/ZIndex:fixed",
-    "ui/ZIndex:modal",
-    "ui/ZIndex:modalBackdrop",
-    "ui/ZIndex:popover",
-    "ui/ZIndex:sticky",
-    "ui/ZIndex:tooltip"
+    "ui/WidgetProperty:validation"
   ]
 }