feat: v0.3 persistence — collections, history, session restore

Introduces a JSON store at $OS_CONFIG_DIR/hypr/store.json:

- Collections: create/rename/delete collections; save named requests to
  them via a dialog; load saved requests into the active tab with one click.
- History: every send is recorded (method, URL, status, duration); capped
  at 200 entries; click to restore URL into the active tab; clear-all.
- Session restore: open tabs (method, URL, headers, params, body, auth,
  settings) are persisted on each action and restored on launch.
- Sidebar: collapsible left panel with Collections + History sections.
- Fix: method and URL are now per-tab (were previously shared across tabs).
- 5 new store tests (34 total); all existing tests still pass.
- 10 new bound Go methods for the store; App.Store field non-fatally
  initialized so the app still runs if the config dir is unavailable.

Author: Rahul Tyagi

CHANGELOG.md

@@ -7,6 +7,33 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+- **v0.3 — Persistence:** JSON store at `$OS_CONFIG_DIR/hypr/store.json`; data survives restart.
+- **Collections:** create named collections, save requests to them (name + target collection dialog),
+  load saved requests into any tab with one click, delete collections and individual requests.
+- **History:** every sent request is recorded (method, URL, status, duration); shows in sidebar;
+  click an entry to restore the URL into the active tab; auto-capped at 200 entries; clear-all action.
+- **Session restore:** open tabs (URL, method, headers, params, body, auth, settings) are persisted
+  on every meaningful action and restored on the next launch.
+- **Sidebar:** collapsible left panel (toggle via `PanelLeftClose`/`PanelLeftOpen` icon) with
+  Collections and History sections; each section independently collapsible.
+- Per-tab method and URL are now properly isolated — switching tabs restores each tab's method+URL
+  (previously method and URL were shared across all tabs).
+- 5 new Go tests in `store_test.go` covering collection CRUD, request save/delete,
+  history append/clear/cap, and session save/restore (total: 34 tests).
+
+### Changed
+- Backend: added `Store` type backed by JSON, 10 new bound methods
+  (`ListCollections`, `SaveCollection`, `DeleteCollection`, `SaveRequest`, `DeleteRequest`,
+  `AppendHistory`, `ListHistory`, `ClearHistory`, `LoadSession`, `SaveSession`).
+- `App` struct gains a `store *Store` field initialized in `startup`; failure is non-fatal
+  (app runs without persistence rather than crashing).
+- `KVPair`, `StoredAuth`, `TabState`, `SavedRequest`, `Collection`, `HistoryEntry`, `Session`
+  Go types added to `store.go`.
+- Frontend layout changed from single-column scroll to sidebar + scrollable main area.
+- ESLint: `@typescript-eslint/no-empty-function` turned off (fire-and-forget `.catch(() => {})`
+  is intentional for non-critical persistence calls).
+
 ### Added
 - Complete UI redesign on Tailwind CSS + shadcn/ui (Radix), with IBM Plex typography
   and a reusable component kit under `frontend/src/components/ui/`.

app.go

@@ -15,6 +15,7 @@ import (
 type App struct {
 	ctx    context.Context
 	client *http.Client
+	store  *Store
 }
 
 // NewApp creates a new App application struct
@@ -34,6 +35,13 @@ func (a *App) startup(ctx context.Context) {
 		Transport: tr,
 	}
 	a.ctx = ctx
+
+	var err error
+	a.store, err = newStore()
+	if err != nil {
+		// Non-fatal: app runs fine without persistence
+		a.store = &Store{}
+	}
 }
 
 func doRequest(c *http.Client,

frontend/.eslintrc.cjs

@@ -20,5 +20,7 @@ module.exports = {
     '@typescript-eslint/no-explicit-any': 'off',
     // The React root element is known to exist.
     '@typescript-eslint/no-non-null-assertion': 'off',
+    // Fire-and-forget .catch(() => {}) is intentional for non-critical persistence calls.
+    '@typescript-eslint/no-empty-function': 'off',
   },
 }