Refactor comments and update documentation for backend and pipeline (#246)

* Remove restating comments in backend

* Remove restating comments in frontend stories

* Remove restating comments in pipeline

* Remove restating comments in pipeline scripts

* Restore location-clear comment in BreweryRepository

* Remove stale/restating comments found in second pass

* Restore mock curated-data branch comment in main.cc

* Remove more restating/filler comments in backend

* Document account-management endpoints, compose files, and env generator

* Squashed commit of the following:

commit a8a5b8abd9969859c695092fae6990d03b2135ed
Author: Aaron Po <aaron.po97@gmail.com>
Date:   Sun Aug 23 23:53:56 2026 -0400

    Add reverse geocoding for brewery street addresses (#245)

    * Add geocoding to seed application, remove postal codes from generator

    Update comments

* Update pipeline class diagram for OpenAI generator

* Update pipeline activity diagram for brewery coordinates and OpenAI backend

* Add mailpit, production, db-only, and minimal environments to deployment diagram

* Fix authentication flow diagram for Identity migration

* Add account-management flows to authentication diagram

* Fix database schema diagram note referencing removed AuthRepository

tooling/pipeline/includes/concurrency/bounded_channel.h

@@ -67,7 +67,6 @@ class BoundedChannel {
    void Close();
 };
 
-// Include the template implementation
 #include "bounded_channel.tcc"
 
 #endif  // BIERGARTEN_PIPELINE_INCLUDES_CONCURRENCY_BOUNDED_CHANNEL_H_

tooling/pipeline/includes/services/database/sqlite_handle_types.h

@@ -24,7 +24,6 @@ using SqliteDatabaseHandle = std::unique_ptr<sqlite3, SqliteDatabaseDeleter>;
 using SqliteStatementHandle =
     std::unique_ptr<sqlite3_stmt, SqliteStatementDeleter>;
 
-// Represents a parameter that is bound to a prepared SQLite statement.
 // N.B. indices are 1 based.
 template <typename T>
 struct BoundParam {

tooling/pipeline/includes/services/datetime/date_time_provider.h

@@ -15,9 +15,6 @@
 
 /**
  * @brief Interface for UTC timestamp providers.
- *
- * @todo Yagni, consider removing this and just use SystemDateTimeProvider
- * directly
  */
 class IDateTimeProvider {
   public: