Expose ban-time escalation settings in jail detail and config UI

- Backend: Add BantimeEscalation + BantimeEscalationUpdate Pydantic models
  to app/models/config.py; add bantime_escalation field to Jail in jail.py
- Backend: jail_service.get_jail_detail() fetches 7 bantime.* socket commands
  (increment, factor, formula, multipliers, maxtime, rndtime, overalljails)
  and populates bantime_escalation on the returned Jail object
- Backend: config_service.get_jail_config() fetches same 7 commands;
  update_jail_config() writes escalation fields when provided
- Frontend: Add BantimeEscalation + BantimeEscalationUpdate interfaces to
  types/config.ts; extend JailConfig + JailConfigUpdate; extend Jail in
  types/jail.ts
- Frontend: JailDetailPage.tsx adds BantimeEscalationSection component that
  renders only when increment is enabled (shows factor, formula, multipliers,
  max_time, rnd_time, overall_jails)
- Frontend: ConfigPage.tsx JailAccordionPanel adds full escalation edit form
  (Switch for enable/disable, number inputs for factor/max_time/rnd_time,
  text inputs for formula/multipliers, Switch for overall_jails);
  handleSave includes bantime_escalation in the JailConfigUpdate payload
- Tests: Update ConfigPageLogPath.test.tsx mock to include bantime_escalation:null
- Docs: Mark Task 6 as DONE in Tasks.md

Docs/Tasks.md

@@ -138,3 +138,55 @@ Reference config directory: `/home/lukas/Volume/repo/BanGUI/Docker/fail2ban-dev-
   - Added inline "Add Log Path" form below the existing log-path list — an `Input` for the file path, a `Switch` for tail/head selection, and an "Add" button with `aria-label="Add log path"`.
 - 6 new frontend tests in `src/components/__tests__/ConfigPageLogPath.test.tsx` covering: rendering, disabled state, enabled state, successful add, success message, and API error surfacing.
 - `tsc --noEmit`, `eslint`: zero errors.
+
+---
+
+## Task 6 — Expose Ban-Time Escalation Settings ✅ DONE
+
+**Goal:** Surface fail2ban's incremental ban-time escalation settings in the web UI, as called out in [Features.md § 5 (Jail Detail)](Features.md) and [Features.md § 6 (Edit Configuration)](Features.md).
+
+**Features.md requirements:**
+- §5 Jail Detail: "Shows ban-time escalation settings if incremental banning is enabled (factor, formula, multipliers, max time)."
+- §6 Edit Configuration: "Configure ban-time escalation: enable incremental banning and set factor, formula, multipliers, maximum ban time, and random jitter."
+
+**Tasks:**
+
+### 6a — Backend: Add `BantimeEscalation` model and extend jail + config models
+
+- Add `BantimeEscalation` Pydantic model with fields: `increment` (bool), `factor` (float|None), `formula` (str|None), `multipliers` (str|None), `max_time` (int|None), `rnd_time` (int|None), `overall_jails` (bool).
+- Add `bantime_escalation: BantimeEscalation | None` field to `Jail` in `app/models/jail.py`.
+- Add escalation fields to `JailConfig` in `app/models/config.py` (mirrored via `BantimeEscalation`).
+- Add escalation fields to `JailConfigUpdate` in `app/models/config.py`.
+
+### 6b — Backend: Read escalation settings from fail2ban socket
+
+- In `jail_service.get_jail_detail()`: fetch the seven `bantime.*` socket commands in the existing `asyncio.gather()` block; populate `bantime_escalation` on the returned `Jail`.
+- In `config_service.get_jail_config()`: same gather pattern; populate `bantime_escalation` on `JailConfig`.
+
+### 6c — Backend: Write escalation settings to fail2ban socket
+
+- In `config_service.update_jail_config()`: when `JailConfigUpdate.bantime_escalation` is provided, `set <jail> bantime.increment`, and any non-None sub-fields.
+
+### 6d — Frontend: Update types
+
+- `types/jail.ts`: add `BantimeEscalation` interface; add `bantime_escalation: BantimeEscalation | null` to `Jail`.
+- `types/config.ts`: add `bantime_escalation: BantimeEscalation | null` to `JailConfig`; add `BantimeEscalationUpdate` and include it in `JailConfigUpdate`.
+
+### 6e — Frontend: Show escalation in Jail Detail
+
+- In `JailDetailPage.tsx`, add a "Ban-time Escalation" info card that is only rendered when `bantime_escalation?.increment === true`.
+- Show: increment enabled indicator, factor, formula, multipliers, max time, random jitter.
+
+### 6f — Frontend: Edit escalation in ConfigPage
+
+- In `ConfigPage.tsx` `JailAccordionPanel`, add a "Ban-time Escalation" section with:
+  - A `Switch` for `increment` (enable/disable).
+  - When enabled: numeric inputs for `max_time` (seconds), `rnd_time` (seconds), `factor`; text inputs for `formula` and `multipliers`; Switch for `overall_jails`.
+  - Saving triggers `updateJailConfig` with the escalation payload.
+
+### 6g — Tests
+
+- Backend: unit tests in `test_config_service.py` verifying that escalation fields are fetched and written.
+- Backend: router integration tests in `test_config.py` verifying the escalation round-trip.
+- Frontend: update `ConfigPageLogPath.test.tsx` mock `JailConfig` to include `bantime_escalation: null`.
+