fix: commit remaining modified files for service and profile template

refactor(css): extract inline styles to css classes and update README with technical details

fix: commit pending changes for log reading logic and chat template restart link

fix(ui): profile back button now saves changes and ensures Restart label is consistent

feat(ui): remove redundant navbar from start page

feat(ui): unify navigation bar across all pages and disable profile link on start page

feat(ui): add floating info button to reopen modal and enforce single-session flow

fix(ui): reset intro modal visibility with v2 key and add localized tooltip to name input

fix(ui): enhance modal styling, navbar color, form validation and session logic

feat(ui): add welcome modal with portfolio project details

feat(ui): add navbar with home and profile links

feat(ui): add loading state to submit button and exclude tts models

feat(gemini): implement dynamic model selection in chat interface

fix(profile): update button text for clarity

feat(template): add generic error redirect page

style: improved card alignment and responsiveness in templates

refactor(profile): update layout and headings for editing profile

refactor(start): improve profile creation form layout and toggle logic

feat(genres): add and alphabetically sort extended list of book genres in start and profile forms

feat(start): allow toggling between new profile creation and existing profiles list

feat: add custom stylesheet for improved UI

chore: remove unused book recommendation files

feat(app): adds start route

feat(chat): greet user by name with friendly opening message

feat(user-profile): add /perfil route and template to collect user name and preferences

feat(ui): add basic chat interface template

feat: add HTML template to display personalized recommendations