TASK-026: mark action items checked (status: In Progress)

Ticks the four action-item checkboxes on TASK-026.md, flips the task's
own status line to "In Progress", and mirrors that status into the
M4 row of specs/tasks/_index.md.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: etr

specs/tasks/M4-handlers/TASK-026.md

@@ -8,10 +8,10 @@
 Provide the table-driven escape hatch for registering handlers when the HTTP method is a runtime value.
 
 **Action Items:**
-- [ ] Add `webserver::route(http_method m, const std::string& path, std::function<http_response(const http_request&)> handler);`.
-- [ ] Implementation dispatches to the same internal registration path used by `on_*`.
-- [ ] Document the call-site convention: `route()` is the escape hatch; `on_*` is preferred when the method is known statically.
-- [ ] Add `webserver::route(method_set methods, const std::string& path, handler)` if a single handler should serve multiple methods (e.g., GET and HEAD).
+- [x] Add `webserver::route(http_method m, const std::string& path, std::function<http_response(const http_request&)> handler);`.
+- [x] Implementation dispatches to the same internal registration path used by `on_*`.
+- [x] Document the call-site convention: `route()` is the escape hatch; `on_*` is preferred when the method is known statically.
+- [x] Add `webserver::route(method_set methods, const std::string& path, handler)` if a single handler should serve multiple methods (e.g., GET and HEAD).
 
 **Dependencies:**
 - Blocked by: TASK-005, TASK-025
@@ -26,4 +26,4 @@ Provide the table-driven escape hatch for registering handlers when the HTTP met
 **Related Requirements:** PRD-HDL-REQ-006
 **Related Decisions:** §4.7, OQ-003 resolution
 
-**Status:** Not Started
+**Status:** In Progress

specs/tasks/_index.md

@@ -108,7 +108,7 @@ Nominally: **13 sequential tasks**, each S–XL. Most other tasks parallelize of
 | TASK-023 | Smart-pointer `register_resource` overloads | M4 | Done | TASK-014 |
 | TASK-024 | `register_path` and `register_prefix` (replace `bool family`) | M4 | Done | TASK-023 |
 | TASK-025 | Lambda handler entry points `on_*` | M4 | Done | TASK-005, TASK-009, TASK-014 |
-| TASK-026 | Generic `webserver::route(method, path, handler)` | M4 | Not Started | TASK-005, TASK-025 |
+| TASK-026 | Generic `webserver::route(method, path, handler)` | M4 | In Progress | TASK-005, TASK-025 |
 | TASK-027 | 3-tier route table with LRU cache | M5 | Not Started | TASK-005, TASK-014, TASK-021, TASK-024, TASK-025, TASK-026 |
 | TASK-028 | Routing-semantics regression gate | M5 | Not Started | TASK-027 |
 | TASK-029 | Naming consistency — `stop_and_wait`, `block_ip`/`unblock_ip` | M5 | Not Started | TASK-014 |