Fix European trip return heuristic for weekend location tracking

Adjust European short trip heuristic from >3 days to >1 day to correctly
detect when user has returned home from European trips. This fixes the
April 29-30, 2023 case where the location incorrectly showed "Sankt Georg, Hamburg"
instead of "Bristol" when the user was free (no events scheduled) after
the foss-north trip ended on April 27.

The previous logic required more than 3 days to pass before assuming
return home from European countries, but for short European trips by
rail/ferry, users typically return within 1-2 days.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

node_modules/ajv/lib/vocabularies/format/format.ts

@@ -0,0 +1,120 @@
+import type {
+  AddedFormat,
+  FormatValidator,
+  AsyncFormatValidator,
+  CodeKeywordDefinition,
+  KeywordErrorDefinition,
+  ErrorObject,
+} from "../../types"
+import type {KeywordCxt} from "../../compile/validate"
+import {_, str, nil, or, Code, getProperty, regexpCode} from "../../compile/codegen"
+
+type FormatValidate =
+  | FormatValidator<string>
+  | FormatValidator<number>
+  | AsyncFormatValidator<string>
+  | AsyncFormatValidator<number>
+  | RegExp
+  | string
+  | true
+
+export type FormatError = ErrorObject<"format", {format: string}, string | {$data: string}>
+
+const error: KeywordErrorDefinition = {
+  message: ({schemaCode}) => str`must match format "${schemaCode}"`,
+  params: ({schemaCode}) => _`{format: ${schemaCode}}`,
+}
+
+const def: CodeKeywordDefinition = {
+  keyword: "format",
+  type: ["number", "string"],
+  schemaType: "string",
+  $data: true,
+  error,
+  code(cxt: KeywordCxt, ruleType?: string) {
+    const {gen, data, $data, schema, schemaCode, it} = cxt
+    const {opts, errSchemaPath, schemaEnv, self} = it
+    if (!opts.validateFormats) return
+
+    if ($data) validate$DataFormat()
+    else validateFormat()
+
+    function validate$DataFormat(): void {
+      const fmts = gen.scopeValue("formats", {
+        ref: self.formats,
+        code: opts.code.formats,
+      })
+      const fDef = gen.const("fDef", _`${fmts}[${schemaCode}]`)
+      const fType = gen.let("fType")
+      const format = gen.let("format")
+      // TODO simplify
+      gen.if(
+        _`typeof ${fDef} == "object" && !(${fDef} instanceof RegExp)`,
+        () => gen.assign(fType, _`${fDef}.type || "string"`).assign(format, _`${fDef}.validate`),
+        () => gen.assign(fType, _`"string"`).assign(format, fDef)
+      )
+      cxt.fail$data(or(unknownFmt(), invalidFmt()))
+
+      function unknownFmt(): Code {
+        if (opts.strictSchema === false) return nil
+        return _`${schemaCode} && !${format}`
+      }
+
+      function invalidFmt(): Code {
+        const callFormat = schemaEnv.$async
+          ? _`(${fDef}.async ? await ${format}(${data}) : ${format}(${data}))`
+          : _`${format}(${data})`
+        const validData = _`(typeof ${format} == "function" ? ${callFormat} : ${format}.test(${data}))`
+        return _`${format} && ${format} !== true && ${fType} === ${ruleType} && !${validData}`
+      }
+    }
+
+    function validateFormat(): void {
+      const formatDef: AddedFormat | undefined = self.formats[schema]
+      if (!formatDef) {
+        unknownFormat()
+        return
+      }
+      if (formatDef === true) return
+      const [fmtType, format, fmtRef] = getFormat(formatDef)
+      if (fmtType === ruleType) cxt.pass(validCondition())
+
+      function unknownFormat(): void {
+        if (opts.strictSchema === false) {
+          self.logger.warn(unknownMsg())
+          return
+        }
+        throw new Error(unknownMsg())
+
+        function unknownMsg(): string {
+          return `unknown format "${schema as string}" ignored in schema at path "${errSchemaPath}"`
+        }
+      }
+
+      function getFormat(fmtDef: AddedFormat): [string, FormatValidate, Code] {
+        const code =
+          fmtDef instanceof RegExp
+            ? regexpCode(fmtDef)
+            : opts.code.formats
+            ? _`${opts.code.formats}${getProperty(schema)}`
+            : undefined
+        const fmt = gen.scopeValue("formats", {key: schema, ref: fmtDef, code})
+        if (typeof fmtDef == "object" && !(fmtDef instanceof RegExp)) {
+          return [fmtDef.type || "string", fmtDef.validate, _`${fmt}.validate`]
+        }
+
+        return ["string", fmtDef, fmt]
+      }
+
+      function validCondition(): Code {
+        if (typeof formatDef == "object" && !(formatDef instanceof RegExp) && formatDef.async) {
+          if (!schemaEnv.$async) throw new Error("async format in sync schema")
+          return _`await ${fmtRef}(${data})`
+        }
+        return typeof format == "function" ? _`${fmtRef}(${data})` : _`${fmtRef}.test(${data})`
+      }
+    }
+  },
+}
+
+export default def

node_modules/ajv/lib/vocabularies/format/index.ts

@@ -0,0 +1,6 @@
+import type {Vocabulary} from "../../types"
+import formatKeyword from "./format"
+
+const format: Vocabulary = [formatKeyword]
+
+export default format