docs: studio CHANGELOG.md, covering 0.62.x → 0.68.0

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

CHANGELOG.md

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+# Changelog
+
+All notable changes to `fai_studio` recorded here. Pubspec
+version + `kStudioVersion` in `lib/main.dart` stay in lockstep.
+
+## 0.68.0 — 2026-06-09
+
+### Added
+
+- **Inline approval driver**. `StudioFlowRunDriver` implements
+  the three new methods the editor 0.21.0 introduced
+  (`pendingApprovalIdForStep`, `approveApproval`,
+  `rejectApproval`) — all delegate to the existing
+  `HubService` approvals RPCs. End result: the Run tab now
+  hosts a complete Approve / Reject form inline, removing the
+  tab-switch detour to the standalone Approvals page.
+
+## 0.67.0 — 2026-06-09
+
+### Added
+
+- **Inline help icons** in the Approvals, Audit, and Doctor
+  app-bars open the matching bundled doc in the existing
+  bottom-sheet reader via the new public helper
+  `showFaiDoc(BuildContext, slug)` exported from `welcome.dart`.
+- **New `assets/docs/approvals.md`** (+ `_de.md`) explains the
+  approval concept end-to-end with a YAML example.
+- **friendlyError hub-pattern matching**. Six hub-specific
+  failure shapes (approval rejected / timed out, output too
+  large, host service not declared, missing value reference,
+  MCP unreachable) get specific localised headlines + hints
+  before falling through to the gRPC-code default. Five new
+  test cases pin the matchers.
+
+### Changed
+
+- **Settings dialog sidebar fully localised** (Allgemein /
+  Darstellung / System-KI / Integrationen / Sicherheit /
+  Wartung). Per-panel titles + descriptions also.
+- **Daemon action labels localised**: `enable autostart`,
+  `disable autostart`, restart / start / stop / status + the
+  OK / Failed result line.
+
+## 0.66.0 — 2026-06-08
+
+### Added
+
+- **Add-module-source dialog** for private modules that
+  aren't in the public store. Asks for URL or local `.fai`
+  bundle path; carries an explainer block + `fai install --link`
+  example.
+- **Store catalogue** passed to the flow editor so the
+  analyzer can decide between Install (in store) and Add
+  source (not in store).
+
+## 0.65.x
+
+- Editor 0.18.0 pickup; analyzer-error block on Run;
+  diagnostic strip persistence across tabs.
+
+## 0.64.0 — 2026-06-08
+
+### Added
+
+- **Flow editor quick-fix install handler**.
+  `_onInstallCapability` wires the editor's "Install <cap>"
+  button to `HubService.installModule` and refreshes the
+  capability list on success.
+
+## 0.63.0 — 2026-06-04
+
+### Changed
+
+- **Settings dialog refactored** from one 800-line vertical
+  scroll into a macOS-style sidebar with six categories.
+
+## 0.62.x — 2026-06-03
+
+### Added
+
+- **`FaiLog` + central error helpers** (`showFaiErrorSnack`,
+  `showFaiErrorDialog`).
+- **Inline `FaiLogViewer`** modal for tail-viewing log files.
+- **Today CTAs** in the Store carousel actually re-run search
+  after a `filterCategory` / `runQuery` story.
+
+## 0.61.x and earlier
+
+See git log.