Let the install set how many steps a run may take

The two limits were compiled in: a task run stopped at
AppData.HarnessMaxToolSteps (200) and a chat reply at
AppData.BotReplyMaxToolSteps (8), so an install that needed a longer task
had to rebuild.

Both are now `app_settings` rows (`harness_max_tool_steps` and
`bot_reply_max_tool_steps`), read at the two loop call sites through
grabHarnessMaxToolSteps and grabReplyMaxToolSteps, and edited by the super
admin on Settings > General beside the prompt appendix. Zero clears a
limit back to the code default, like the bot file quota.

readStepLimit keeps the saved number only when it is a whole number of at
least 1 and no more than AppData.BotStepLimitMax (1000), so a blank, a
zero or a typo falls back instead of stopping every run before its first
turn, and a huge number still ends in the wrap-up report.

runTextLoop keeps AppData.HarnessMaxToolSteps as its default, so it stays
free of database reads and its tests run as they did.

src/pages/admin/settings/(functions)/grab-settings-server-props.ts

@@ -5,6 +5,7 @@ import sanitizeUserBio from "@/src/functions/backend/db/users/sanitize-user-bio"
 import grabUserPasswordHash from "@/src/functions/backend/auth/grab-user-password-hash";
 import type { PagePropsType } from "@/src/types";
 import type { BunextPageServerFn } from "@moduletrace/bunext/types";
+import grabRunLimitsOverview from "@/src/functions/backend/db/app-settings/grab-run-limits";
 import grabStorageQuotaOverview from "@/src/functions/backend/db/app-settings/grab-storage-quota-overview";
 import { grabSystemPromptAppendOverview } from "@/src/functions/backend/db/app-settings/grab-system-prompt-append";
 import runningVersion from "@/src/utils/running-version";
@@ -45,6 +46,7 @@ export default async function grabSettingsServerProps({ req }: Params) {
             has_password,
             storage_quota: await grabStorageQuotaOverview().catch(() => null),
             system_prompt_append: await grabSystemPromptAppendOverview().catch(() => null),
+            run_limits: await grabRunLimitsOverview().catch(() => null),
             running_version: runningVersion({ env: process.env }),
         },
     };