Bugfix — Issue #520: E_WARNING Multiple Missing $gui Properties in Dashio Templates

Problem

PHP 8.x emits E_WARNING: Undefined property on every page load for several dashio templates that reference $gui or $tlCfg properties that were never initialized by their PHP controllers.

Root Cause

When dashio templates were ported from the classic theme, some property references were carried over but the corresponding PHP initializations were missed:

Property	Template	PHP Controller	Cause
$gui->doViewReload	plan/planView.tpl:204	lib/plan/planView.php::initializeGui()	Never set (set in planEdit.php and projectView.php but not planView.php)
$tlCfg->layout->cellContent	plan/planEdit.tpl:31	Entire codebase	$tlCfg->layout was never defined; phantom config reference
$tlCfg->layout->cellLabel	plan/planEdit.tpl:32	Entire codebase	Same
$gui->tprojOpt	plan/tc_exec_assignment_flat.tpl:236,288,296	lib/plan/tc_exec_assignment.php:222-224	PHP computed $tprojOpt locally but assigned $gui->testPriorityEnabled (scalar) instead of $gui->tprojOpt (object)
$gui->tplan_id	testcases/containerNew.tpl:44	lib/functions/testsuite.class.php::viewer_edit_new()	No safety guard; callers set it but function itself doesn't ensure it exists

Fix

Four minimal changes:

1. lib/plan/planView.php:187 — Added $gui->doViewReload = false; in initializeGui(), matching the pattern from planEdit.php:460 and projectView.php:127.

2. gui/templates/dashio/plan/planEdit.tpl:31-32 — Replaced $tlCfg->layout->cellContent and $tlCfg->layout->cellLabel with hardcoded Bootstrap grid defaults (col-sm-9 and col-sm-3), matching the form-horizontal pattern used throughout dashio.

3. lib/plan/tc_exec_assignment.php:224 — Added $gui->tprojOpt = is_object($tprojOpt) ? $tprojOpt : new stdClass(); to properly assign the already-computed $tprojOpt object to the gui variable that the template expects.

4. gui/templates/dashio/testcases/containerNew.tpl:44 — Added isset() guard: {if isset($gui->tplan_id)}{$gui->tplan_id}{else}0{/if}, consistent with the existing property_exists guard pattern used elsewhere (e.g., keywords.inc.tpl).

Verification

• All 3 modified PHP files pass php -l syntax check.
• planView page renders correctly, no console errors.
• planEdit form renders correctly with Bootstrap grid layout, no console errors.
• containerNew form renders correctly, no errors.
• Screenshot: docs/screenshots/issue-520-planEdit-no-warnings.png