Hub v0.6.1: delete issues from UI + fingerprint hardening

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

hub/CHANGELOG.md

@@ -1,5 +1,14 @@
 # Felhom Hub — Changelog
 
+## v0.6.1 (2026-02-25)
+
+### Added
+- **Delete issues from app detail page** — Known Issues table now has per-row checkboxes with "Delete Selected" and "Delete All Issues" buttons; keeps telemetry data (memory trends, etc.) intact
+- **`DELETE /apps/{appName}/delete-issues`** — New POST endpoint supporting `action=selected` (with `issue_ids` form values) and `action=all`
+
+### Fixed
+- **Hub-side fingerprint hardening** — `fingerprintIssue()` now strips ANSI escape codes, ISO/syslog timestamps, and lowercases before truncating to 100 chars. Prevents duplicate issue rows when messages differ only by embedded timestamps.
+
 ## v0.6.0 (2026-02-25)
 
 ### Added

hub/internal/store/telemetry.go

@@ -3,9 +3,17 @@ package store
 import (
 	"database/sql"
 	"encoding/json"
+	"regexp"
+	"strings"
 	"time"
 )
 
+var (
+	reANSI      = regexp.MustCompile(`\x1b\[[0-9;]*m`)
+	reTimestamp  = regexp.MustCompile(`\d{4}[-/]\d{2}[-/]\d{2}[T ]\d{2}:\d{2}:\d{2}[.\d]*([+-]\d{2}:?\d{2})?[Z ]?:? ?`)
+	reSyslog    = regexp.MustCompile(`[A-Z][a-z]{2}\s+\d{1,2} \d{2}:\d{2}:\d{2} `)
+)
+
 // AppTelemetryRecord holds per-app telemetry received from a controller report.
 type AppTelemetryRecord struct {
 	AppName         string   `json:"app_name"`
@@ -180,10 +188,15 @@ func upsertAppIssue(tx *sql.Tx, appName, fingerprint, severity, message, custome
 
 // fingerprintIssue creates a short fingerprint key from a message string.
 func fingerprintIssue(msg string) string {
-	if len(msg) > 100 {
+	s := reANSI.ReplaceAllString(msg, "")
-		msg = msg[:100]
+	s = reTimestamp.ReplaceAllString(s, "")
+	s = reSyslog.ReplaceAllString(s, "")
+	s = strings.TrimSpace(s)
+	s = strings.ToLower(s)
+	if len(s) > 100 {
+		s = s[:100]
 	}
-	return msg
+	return s
 }
 
 // min returns the smaller of two ints.
@@ -464,3 +477,22 @@ func (s *Store) DeleteAppIssues(appName string) (int64, error) {
 	}
 	return res.RowsAffected()
 }
+
+// DeleteAppIssuesByIDs removes specific issue records by their IDs.
+func (s *Store) DeleteAppIssuesByIDs(ids []int) (int64, error) {
+	if len(ids) == 0 {
+		return 0, nil
+	}
+	placeholders := make([]string, len(ids))
+	args := make([]interface{}, len(ids))
+	for i, id := range ids {
+		placeholders[i] = "?"
+		args[i] = id
+	}
+	query := "DELETE FROM app_log_issues WHERE id IN (" + strings.Join(placeholders, ",") + ")"
+	res, err := s.db.Exec(query, args...)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}

hub/internal/web/apps.go

@@ -130,6 +130,57 @@ func (s *Server) handleResetAppTelemetry(w http.ResponseWriter, r *http.Request,
 	http.Redirect(w, r, target, http.StatusSeeOther)
 }
 
+// handleDeleteAppIssues handles POST requests to delete selected or all issues for an app.
+func (s *Server) handleDeleteAppIssues(w http.ResponseWriter, r *http.Request, appName string) {
+	action := r.FormValue("action")
+
+	var deletedCount int64
+	var err error
+
+	switch action {
+	case "all":
+		deletedCount, err = s.store.DeleteAppIssues(appName)
+	case "selected":
+		r.ParseForm()
+		idStrs := r.Form["issue_ids"]
+		if len(idStrs) == 0 {
+			period := r.URL.Query().Get("period")
+			target := "/apps/" + appName + "?flash=no_issues_selected"
+			if period != "" {
+				target += "&period=" + period
+			}
+			http.Redirect(w, r, target, http.StatusSeeOther)
+			return
+		}
+		ids := make([]int, 0, len(idStrs))
+		for _, s := range idStrs {
+			id, err := strconv.Atoi(s)
+			if err == nil && id > 0 {
+				ids = append(ids, id)
+			}
+		}
+		deletedCount, err = s.store.DeleteAppIssuesByIDs(ids)
+	default:
+		http.Error(w, "Invalid action", http.StatusBadRequest)
+		return
+	}
+
+	if err != nil {
+		s.logger.Printf("[ERROR] Failed to delete issues for %s: %v", appName, err)
+		http.Error(w, "Internal error", http.StatusInternalServerError)
+		return
+	}
+
+	s.logger.Printf("[INFO] Deleted %d issues for %s (action=%s)", deletedCount, appName, action)
+
+	period := r.URL.Query().Get("period")
+	target := "/apps/" + appName + "?flash=issues_deleted"
+	if period != "" {
+		target += "&period=" + period
+	}
+	http.Redirect(w, r, target, http.StatusSeeOther)
+}
+
 // parsePeriod converts a period string to a time.Time cutoff.
 func parsePeriod(s string, defaultDur time.Duration) time.Time {
 	switch s {

hub/internal/web/server.go

@@ -161,6 +161,14 @@ func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		} else {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 		}
+	case strings.HasPrefix(path, "/apps/") && strings.HasSuffix(path, "/delete-issues"):
+		appName := strings.TrimPrefix(path, "/apps/")
+		appName = strings.TrimSuffix(appName, "/delete-issues")
+		if r.Method == http.MethodPost {
+			s.handleDeleteAppIssues(w, r, appName)
+		} else {
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		}
 	case strings.HasPrefix(path, "/apps/"):
 		appName := strings.TrimPrefix(path, "/apps/")
 		s.handleAppDetail(w, r, appName)

hub/internal/web/templates/app_detail.html

@@ -31,6 +31,12 @@
         {{if eq .Flash "telemetry_reset"}}
         <div class="flash flash-success" style="margin-top: 1rem;">Telemetry data deleted successfully.</div>
         {{end}}
+        {{if eq .Flash "issues_deleted"}}
+        <div class="flash flash-success" style="margin-top: 1rem;">Selected issues deleted successfully.</div>
+        {{end}}
+        {{if eq .Flash "no_issues_selected"}}
+        <div class="flash flash-error" style="margin-top: 1rem;">No issues were selected for deletion.</div>
+        {{end}}
 
         <!-- Overview card -->
         <section class="card">
@@ -183,9 +189,13 @@
         {{if .Issues}}
         <section class="card">
             <h2>Known Issues</h2>
+            <form method="POST" action="/apps/{{.AppName}}/delete-issues{{if .Period}}?period={{.Period}}{{end}}" id="issueForm">
+                <input type="hidden" name="_csrf" value="{{.CSRFToken}}">
+                <input type="hidden" name="action" value="selected" id="issueAction">
                 <table class="data-table">
                     <thead>
                         <tr>
+                            <th style="width: 2rem;"><input type="checkbox" id="selectAll" title="Select all"></th>
                             <th>Severity</th>
                             <th>Message</th>
                             <th>Occurrences</th>
@@ -197,6 +207,7 @@
                     <tbody>
                         {{range .Issues}}
                         <tr>
+                            <td><input type="checkbox" name="issue_ids" value="{{.ID}}" class="issue-cb"></td>
                             <td>
                                 {{if eq .Severity "error"}}<span class="badge badge-error">error</span>
                                 {{else}}<span class="badge badge-warn">warn</span>{{end}}
@@ -210,6 +221,17 @@
                         {{end}}
                     </tbody>
                 </table>
+                <div style="display: flex; gap: 0.5rem; margin-top: 0.75rem;">
+                    <button type="submit" class="btn btn-sm btn-danger" onclick="document.getElementById('issueAction').value='selected';">Delete Selected</button>
+                    <button type="submit" class="btn btn-sm btn-danger" onclick="if(!confirm('Delete ALL issues for {{.AppName}}? This cannot be undone.')) return false; document.getElementById('issueAction').value='all';">Delete All Issues</button>
+                </div>
+            </form>
+            <script>
+            document.getElementById('selectAll').addEventListener('change', function() {
+                var cbs = document.querySelectorAll('.issue-cb');
+                for (var i = 0; i < cbs.length; i++) cbs[i].checked = this.checked;
+            });
+            </script>
         </section>
         {{end}}
 

hub/internal/web/templates/style.css

@@ -748,6 +748,12 @@ code {
 }
 .data-table th a:hover { color: var(--text-primary); }
 .data-table tr:hover td { background: rgba(96,165,250,0.04); }
+.data-table input[type="checkbox"] {
+    width: 1rem;
+    height: 1rem;
+    cursor: pointer;
+    accent-color: var(--accent);
+}
 
 /* Responsive */
 @media (max-width: 768px) {