privacy: remove Telegram bot username from all public references

Replace @[username] with 'Telegram bot' / 'Telegram bot Hermes' across:
- /ia (EN+FR)

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

Author: ferr079

src/pages/fr/ia.astro

@@ -100,7 +100,7 @@ import SectionHeading from '../../components/SectionHeading.astro';
             <p class="trio-eyebrow">∷ triage</p>
             <h3>Hermes <span class="trio-ct">CT 190</span></h3>
             <p>
-              Agent self-improving NousResearch, v0.10.0, MiniMax M2.7. Bot <strong>@PC1512Bot</strong>
+              Agent self-improving NousResearch, v0.10.0, MiniMax M2.7. Bot Telegram
               sur Telegram, polling 24/7. Bridge MQTT avec <strong>filtrage par sévérité</strong> —
               route les messages vers groupe/DM selon <code>debug|info|warning|critical</code>.
               Il tourne 3 crons de nuit (doc-sync, site-metrics, veille RSS).

src/pages/ia.astro

@@ -100,7 +100,7 @@ import SectionHeading from '../components/SectionHeading.astro';
             <p class="trio-eyebrow">∷ triage</p>
             <h3>Hermes <span class="trio-ct">CT 190</span></h3>
             <p>
-              Self-improving NousResearch agent, v0.10.0, MiniMax M2.7. Bot <strong>@PC1512Bot</strong>
+              Self-improving NousResearch agent, v0.10.0, MiniMax M2.7. Telegram bot
               on Telegram, polling 24/7. MQTT bridge with <strong>severity filtering</strong> —
               routes messages to group/DM based on <code>debug|info|warning|critical</code>.
               Runs 3 night crons (doc-sync, site-metrics, RSS digest).