fix(cli): reject negative and fractional count/pagination flags in Danish portal CLIs (#191)

Bare z.coerce.number() accepted negative and fractional values for count/pagination flags, and slice(0, limit) with a negative limit silently dropped trailing results instead of erroring. Tightens the schemas to .int().min(1) across all four Danish portal CLIs (including jobnet occupations --per-page) with network-free validation tests.

By @ayobamiseun.

.agents/skills/jobnet-search/cli/src/commands/suggestions.ts

@@ -9,7 +9,7 @@ export const suggestions = defineCommand({
     query: option(z.string().optional(), {
       description: "Partial search string to complete",
     }),
-    limit: option(z.coerce.number().optional(), {
+    limit: option(z.coerce.number().int().min(1).optional(), {
       description: "Cap number of suggestions returned",
     }),
     format: option(z.enum(["json", "table", "plain"]).default("json"), {