refactor(#2416): remove the non-pr config-change flow (request_apply_commit / applycommit)

docs/web-ui/dashboard.md

@@ -1066,7 +1066,6 @@ renderApprovals`) with three stacked sections:
 
   | kind | glyph | chip | sha shown |
   |---|---|---|---|
-  | `apply_commit` | `→` | `apply` | proposal sha (`sha_short`) |
   | `merge_config_pr` | `⇒` | `merge-pr` | PR-head sha (`sha_short`) |
   | `update_meta_inputs` | `↻` | `meta-update` | — |
   | `schedule_prompt` | `⏱` | `schedule` | — |
@@ -1080,26 +1079,16 @@ renderApprovals`) with three stacked sections:
   than at the next `renderApprovals` call.
 - **what-changed body** — the submitting agent's description, then
   kind-specific drill-in triggers:
-  - `apply_commit`: `↳ view diff` opens the inline diff side-panel;
-    `↳ commit on forge ↗` deep-links the proposal commit into
-    `agent-configs/<agent>` (shown only when `forge_present`).
   - `merge_config_pr`: `↳ review PR on forge ↗` deep-links the
     config PR into `agent-configs/<agent>/pulls/<pr_number>` (shown
-    only when `forge_present` and `pr_number` is set). No inline diff
-    side-panel (apply_commit-only for now).
+    only when `forge_present` and `pr_number` is set). The config diff
+    lives on the forge PR itself — no inline diff side-panel.
   - `init_config` / `spawn`: a one-line "container will be created"
     note instead.
 - **decision actions** — `◆ APPR0VE` and `DENY`. Deny pops a
   `prompt()` for an optional reason carried to the submitting agent as
   `HelperEvent::ApprovalResolved.note`.
 
-The diff panel has a 3-way base toggle — **vs applied** (the
-running tree, served instantly from the diff already on the
-approval), **vs last-approved**, **vs previous proposal** — the
-latter two fetched on click from `GET /api/approval-diff/{id}
-?base=approved|previous`. Each line is classified client-side
-(`+` / `-` / `@@` / `--- ` / `+++ ` → add / del / hunk / file).
-
 A `pending · N` / `history · N` tab pair switches the section
 between the live queue and the last 30 resolved approvals.
 
@@ -1199,12 +1188,8 @@ that's a browser-level decision, not ours.
   `"ok"`/`"err"`, `detail` nullable), newest first, server-clamped to
   500; `total` is the full row count for a "latest 500 of N" header.
   Backs the LOGS page AUDIT sub-tab.
-- `GET /api/approval-diff/{id}?base=applied|approved|previous` —
-  on-demand unified diff for an `ApplyCommit` approval against
-  the chosen base (running tree / last approved proposal /
-  previous queued proposal). Raw diff text, classified
-  client-side. `GET /static/marked.js` serves the vendored
-  `marked` bundle the side panel uses for markdown previews.
+- `GET /static/marked.js` serves the vendored `marked` bundle used
+  for markdown previews.
 - `GET /api/state-file?path=<host-or-container-path>` — bounded
   text read of a file under the per-agent `state/` subtree or
   the shared `/var/lib/hyperhive/shared/`. Accepts the