diff --git a/common/.gitignore b/common/.gitignore
new file mode 100644
index 0000000..77f12ae
--- /dev/null
+++ b/common/.gitignore
@@ -0,0 +1 @@
+docs/
diff --git a/common/Makefile b/common/Makefile
new file mode 100644
index 0000000..dde423c
--- /dev/null
+++ b/common/Makefile
@@ -0,0 +1,11 @@
+DOC_OUT := docs/grpc_reference.html
+
+.PHONY: docs
+
+docs:
+	@echo "Generating gRPC documentation..."
+	mkdir -p $(dir $(DOC_OUT))
+	protoc \
+	  --doc_out=html,index.html:$(dir $(DOC_OUT)) \
+	  --proto_path=proto proto/*.proto
+	@echo "✅ Docs written to $(DOC_OUT)"
diff --git a/common/proto/table_definition.proto b/common/proto/table_definition.proto
index d5ac6a5..91effd8 100644
--- a/common/proto/table_definition.proto
+++ b/common/proto/table_definition.proto
@@ -4,56 +4,139 @@ package komp_ac.table_definition;
 
 import "common.proto";
 
+// The TableDefinition service manages the entire lifecycle of user-defined
+// tables (stored as both metadata and physical PostgreSQL tables) inside
+// logical "profiles" (schemas). Each table has stored structure, links, and
+// validation rules.
 service TableDefinition {
-    rpc PostTableDefinition (PostTableDefinitionRequest) returns (TableDefinitionResponse);
-    rpc GetProfileTree (komp_ac.common.Empty) returns (ProfileTreeResponse);
-    rpc DeleteTable (DeleteTableRequest) returns (DeleteTableResponse);
+  // Creates a new table (and schema if missing) with system columns,
+  // linked-table foreign keys, user-defined columns, and optional indexes.
+  // Also inserts metadata and default validation rules. Entirely transactional.
+  rpc PostTableDefinition(PostTableDefinitionRequest)
+      returns (TableDefinitionResponse);
+
+  // Lists all profiles (schemas) and their tables with declared dependencies.
+  // This provides a tree-like overview of table relationships.
+  rpc GetProfileTree(komp_ac.common.Empty)
+      returns (ProfileTreeResponse);
+
+  // Drops a table and its metadata, then deletes the profile if it becomes empty.
+  rpc DeleteTable(DeleteTableRequest)
+      returns (DeleteTableResponse);
 }
 
+// A single link to another table within the same profile (schema).
 message TableLink {
-    string linked_table_name = 1;
-    bool required = 2;
+  // Name of an existing table within the same profile to link to.
+  // For each link, a "<linked>_id" column is created on the new table.
+  // That column references "<linked>"(id) and adds an index automatically.
+  string linked_table_name = 1;
+
+  // If true, the generated foreign key column is NOT NULL.
+  // Otherwise the column allows NULL.
+  // Duplicate links to the same target table in one request are rejected.
+  bool required = 2;
 }
 
+// Defines the input for creating a new table definition.
 message PostTableDefinitionRequest {
-    string table_name = 1;
-    repeated TableLink links = 2;
-    repeated ColumnDefinition columns = 3;
-    repeated string indexes = 4;
-    string profile_name = 5;
+  // Table name to create inside the target profile.
+  // Must be lowercase, alphanumeric with underscores,
+  // start with a letter, and be <= 63 chars.
+  // Forbidden names: "id", "deleted", "created_at", or ending in "_id".
+  string table_name = 1;
+
+  // List of links (foreign keys) to existing tables in the same profile.
+  // Each will automatically get a "<linked>_id" column and an index.
+  repeated TableLink links = 2;
+
+  // List of user-defined columns (adds to system/id/fk columns).
+  repeated ColumnDefinition columns = 3;
+
+  // List of column names to be indexed (must match existing user-defined columns).
+  // Indexes can target only user-defined columns; system columns ("id", "deleted",
+  // "created_at") and automatically generated foreign key ("*_id") columns already
+  // have indexes. Requests trying to index those columns are rejected.
+  repeated string indexes = 4;
+
+  // Name of profile (Postgres schema) where the table will be created.
+  // Same naming rules as table_name; cannot collide with reserved schemas
+  // like "public", "information_schema", or ones starting with "pg_".
+  string profile_name = 5;
 }
 
+// Describes one user-defined column for a table.
 message ColumnDefinition {
-    string name = 1;
-    string field_type = 2;
+  // Column name that follows the same validation rules as table_name.
+  // Must be lowercase, start with a letter, no uppercase characters,
+  // and cannot be "id", "deleted", "created_at", or end with "_id".
+  string name = 1;
+
+  // Logical column type. Supported values (case-insensitive):
+  //   TEXT / STRING
+  //   BOOLEAN
+  //   TIMESTAMP / TIMESTAMPTZ / TIME
+  //   MONEY (= NUMERIC(14,4))
+  //   INTEGER / INT
+  //   BIGINTEGER / BIGINT
+  //   DATE
+  //   DECIMAL(p,s) → NUMERIC(p,s)
+  // DECIMAL args must be integers (no sign, no dot, no leading zeros);
+  // s ≤ p and p ≥ 1.
+  string field_type = 2;
 }
 
+// Response after table creation (success + DDL preview).
 message TableDefinitionResponse {
-    bool success = 1;
-    string sql = 2;
+  // True if all DB changes and metadata inserts succeeded.
+  bool success = 1;
+
+  // The actual SQL executed: CREATE TABLE + CREATE INDEX statements.
+  string sql = 2;
 }
 
+// Describes the tree of all profiles and their tables.
 message ProfileTreeResponse {
-    message Table {
-        int64 id = 1;
-        string name = 2;
-        repeated string depends_on = 3;
-    }
+  // Table entry in a profile.
+  message Table {
+    // Internal ID from table_definitions.id (metadata record).
+    int64 id = 1;
 
-    message Profile {
-        string name = 1;
-        repeated Table tables = 2;
-    }
+    // Table name within the profile (schema).
+    string name = 2;
 
-    repeated Profile profiles = 1;
+    // Other tables this one references (based on link definitions only).
+    repeated string depends_on = 3;
+  }
+
+  // Profile (schema) entry.
+  message Profile {
+    // Name of the schema/profile (as stored in `schemas.name`).
+    string name = 1;
+
+    // All tables in that schema and their dependencies.
+    repeated Table tables = 2;
+  }
+
+  // All profiles in the system.
+  repeated Profile profiles = 1;
 }
 
+// Request to delete one table definition entirely.
 message DeleteTableRequest {
-    string profile_name = 1;
-    string table_name = 2;
+  // Profile (schema) name owning the table (must exist).
+  string profile_name = 1;
+
+  // Table to drop (must exist in the profile).
+  // Executes DROP TABLE "profile"."table" CASCADE and then removes metadata.
+  string table_name = 2;
 }
 
+// Response after table deletion.
 message DeleteTableResponse {
-    bool success = 1;
-    string message = 2;
+  // True if table and metadata were successfully deleted in one transaction.
+  bool success = 1;
+
+  // Human-readable summary of what was removed.
+  string message = 2;
 }
diff --git a/common/proto/table_script.proto b/common/proto/table_script.proto
index 4980f85..b3ea63e 100644
--- a/common/proto/table_script.proto
+++ b/common/proto/table_script.proto
@@ -1,18 +1,101 @@
+// common/proto/table_script.proto
 syntax = "proto3";
 package komp_ac.table_script;
 
+// Manages column-computation scripts for user-defined tables.
+// Each script belongs to a single table (table_definition_id) and populates
+// exactly one target column in that table. The server:
+// - Validates script syntax (non-empty, balanced parentheses, starts with '(')
+// - Validates the target column (exists, not a system column, allowed type)
+// - Validates column/type usage inside math expressions
+// - Validates referenced tables/columns against the schema
+// - Enforces link constraints for structured access (see notes below)
+// - Analyzes dependencies and prevents cycles across the schema
+// - Transforms the script to decimal-safe math (steel_decimal)
+// - Upserts into table_scripts and records dependencies in script_dependencies
+// The whole operation is transactional.
 service TableScript {
-    rpc PostTableScript(PostTableScriptRequest) returns (TableScriptResponse);
+  // Create or update a script for a specific table and target column.
+  //
+  // Behavior:
+  // - Fetches the table by table_definition_id (must exist)
+  // - Validates "script" (syntax), "target_column" (exists and type rules),
+  //   and all referenced tables/columns (must exist in same schema)
+  // - Validates math operations: prohibits using certain data types in math
+  // - Enforces link constraints for structured table access:
+  //    • Allowed always: self-references (same table)
+  //    • Structured access via steel_get_column / steel_get_column_with_index
+  //      requires an explicit link in table_definition_links
+  //    • Raw SQL access via steel_query_sql is permitted (still validated)
+  // - Detects and rejects circular dependencies across all scripts in the schema
+  //   (self-references are allowed and not treated as cycles)
+  // - Transforms the script to decimal-safe operations (steel_decimal)
+  // - UPSERTS into table_scripts on (table_definitions_id, target_column)
+  //   and saves a normalized dependency list into script_dependencies
+  rpc PostTableScript(PostTableScriptRequest) returns (TableScriptResponse);
 }
 
+// Request to create or update a script bound to a specific table and column.
 message PostTableScriptRequest {
-    int64 table_definition_id = 1;
-    string target_column = 2;
-    string script = 3;
-    string description = 4;
+  // Required. The metadata ID from table_definitions.id that identifies the
+  // table this script belongs to. The table must exist; its schema determines
+  // where referenced tables/columns are validated and where dependencies are stored.
+  int64 table_definition_id = 1;
+
+  // Required. The target column in the target table that this script computes.
+  // Must be an existing user-defined column in that table (not a system column).
+  // System columns are reserved: "id", "deleted", "created_at".
+  // The column's data type must NOT be one of the prohibited target types:
+  //   BIGINT, DATE, TIMESTAMPTZ
+  // Note: BOOLEAN targets are allowed (values are converted to Steel #true/#false).
+  string target_column = 2;
+
+  // Required. The script in the Steel DSL (S-expression style).
+  // Syntax requirements:
+  //   - Non-empty, must start with '('
+  //   - Balanced parentheses
+  //
+  // Referencing data:
+  //   - Structured table/column access (enforces link constraints):
+  //       (steel_get_column "table_name" "column_name")
+  //       (steel_get_column_with_index "table_name" index "column_name")
+  //       • index must be a non-negative integer literal
+  //       • self-references are allowed without links
+  //       • other tables require an explicit link from the source table
+  //         (table_definition_links) or the request fails
+  //   - Raw SQL access (no link required, but still validated):
+  //       (steel_query_sql "SELECT ...")
+  //       • Basic checks disallow operations that imply prohibited types,
+  //         e.g., EXTRACT(…), DATE_PART(…), ::DATE, ::TIMESTAMPTZ, ::BIGINT, CAST(…)
+  //   - Self variable access in transformed scripts:
+  //       (get-var "column_name") is treated as referencing the current table
+  //
+  // Math operations:
+  //   - The script is transformed by steel_decimal; supported math forms include:
+  //     +, -, *, /, ^, **, pow, sqrt, >, <, =, >=, <=, min, max, abs, round,
+  //     ln, log, log10, exp, sin, cos, tan
+  //   - Columns of the following types CANNOT be used inside math expressions:
+  //     BIGINT, TEXT, BOOLEAN, DATE, TIMESTAMPTZ
+  //
+  // Dependency tracking and cycles:
+  //   - Dependencies are extracted from steel_get_column(_with_index), get-var,
+  //     and steel_query_sql and stored in script_dependencies with context
+  //   - Cycles across tables are rejected (self-dependency is allowed)
+  string script = 3;
+
+  // Optional. Free-text description stored alongside the script (no functional effect).
+  string description = 4;
 }
 
+// Response after creating or updating a script.
 message TableScriptResponse {
-    int64 id = 1;
-    string warnings = 2;
+  // The ID of the script record in table_scripts (new or existing on upsert).
+  int64 id = 1;
+
+  // Human-readable warnings concatenated into a single string. Possible messages:
+  //  - Warning if the script references itself (may affect first population)
+  //  - Count of raw SQL queries present
+  //  - Info about number of structured linked-table accesses
+  //  - Warning if many dependencies may affect performance
+  string warnings = 2;
 }
diff --git a/common/proto/table_structure.proto b/common/proto/table_structure.proto
index e9d2932..ac45f6c 100644
--- a/common/proto/table_structure.proto
+++ b/common/proto/table_structure.proto
@@ -1,25 +1,70 @@
-// proto/table_structure.proto
+// common/proto/table_structure.proto
 syntax = "proto3";
 package komp_ac.table_structure;
 
 import "common.proto";
 
-message GetTableStructureRequest {
-  string profile_name = 1; // e.g., "default"
-  string table_name = 2;   // e.g., "2025_adresar6"
+// Introspects the physical PostgreSQL table for a given logical table
+// (defined in table_definitions) and returns its column structure.
+// The server validates that:
+// - The profile (schema) exists in `schemas`
+// - The table is defined for that profile in `table_definitions`
+// It then queries information_schema for the physical table and returns
+// normalized column metadata. If the physical table is missing despite
+// a definition, the response may contain an empty `columns` list.
+service TableStructureService {
+  // Return the physical column list (name, normalized data_type,
+  // nullability, primary key flag) for a table in a profile.
+  //
+  // Behavior:
+  // - NOT_FOUND if profile doesn't exist in `schemas`
+  // - NOT_FOUND if table not defined for that profile in `table_definitions`
+  // - Queries information_schema.columns ordered by ordinal position
+  // - Normalizes data_type text (details under TableColumn.data_type)
+  // - Returns an empty list if the table is validated but has no visible
+  //   columns in information_schema (e.g., physical table missing)
+  rpc GetTableStructure(GetTableStructureRequest)
+      returns (TableStructureResponse);
 }
 
+// Request identifying the profile (schema) and table to inspect.
+message GetTableStructureRequest {
+  // Required. Profile (PostgreSQL schema) name. Must exist in `schemas`.
+  string profile_name = 1;
+
+  // Required. Table name within the profile. Must exist in `table_definitions`
+  // for the given profile. The physical table is then introspected via
+  // information_schema.
+  string table_name = 2;
+}
+
+// Response with the ordered list of columns (by ordinal position).
 message TableStructureResponse {
+  // Columns of the physical table, including system columns (id, deleted,
+  // created_at), user-defined columns, and any foreign-key columns such as
+  // "<linked_table>_id". May be empty if the physical table is missing.
   repeated TableColumn columns = 1;
 }
 
+// One physical column entry as reported by information_schema.
 message TableColumn {
+  // Column name exactly as defined in PostgreSQL.
   string name = 1;
-  string data_type = 2; // e.g., "TEXT", "BIGINT", "VARCHAR(255)", "TIMESTAMPTZ"
+
+  // Normalized data type string derived from information_schema:
+  // - VARCHAR(n) when udt_name='varchar' with character_maximum_length
+  // - CHAR(n) when udt_name='bpchar' with character_maximum_length
+  // - NUMERIC(p,s) when udt_name='numeric' with precision and scale
+  // - NUMERIC(p) when udt_name='numeric' with precision only
+  // - <TYPE>[] for array types (udt_name starting with '_', e.g., INT[] )
+  // - Otherwise UPPER(udt_name), e.g., TEXT, BIGINT, TIMESTAMPTZ
+  // Examples: "TEXT", "BIGINT", "VARCHAR(255)", "TIMESTAMPTZ", "NUMERIC(14,4)"
+  string data_type = 2;
+
+  // True if information_schema reports the column as nullable.
   bool is_nullable = 3;
+
+  // True if the column is part of the table's PRIMARY KEY.
+  // Typically true for the "id" column created by the system.
   bool is_primary_key = 4;
 }
-
-service TableStructureService {
-  rpc GetTableStructure (GetTableStructureRequest) returns (TableStructureResponse);
-}
diff --git a/common/proto/tables_data.proto b/common/proto/tables_data.proto
index 9e9fd5a..b0a72c0 100644
--- a/common/proto/tables_data.proto
+++ b/common/proto/tables_data.proto
@@ -5,67 +5,220 @@ package komp_ac.tables_data;
 import "common.proto";
 import "google/protobuf/struct.proto";
 
+// Read and write row data for user-defined tables inside profiles (schemas).
+// Operations are performed against the physical PostgreSQL table that
+// corresponds to the logical table definition and are scoped by profile
+// (schema). Deletions are soft (set deleted = true). Typed binding and
+// script-based validation are enforced consistently.
 service TablesData {
-  rpc PostTableData (PostTableDataRequest) returns (PostTableDataResponse);
-  rpc PutTableData (PutTableDataRequest) returns (PutTableDataResponse);
-  rpc DeleteTableData (DeleteTableDataRequest) returns (DeleteTableDataResponse);
+  // Insert a new row into a table with strict type binding and script validation.
+  //
+  // Behavior:
+  // - Validates that profile (schema) exists and table is defined for it
+  // - Validates provided columns exist (user-defined or allowed system/FK columns)
+  // - For columns targeted by scripts in this table, the client MUST provide the
+  //   value, and it MUST equal the script’s calculated value (compared type-safely)
+  // - Binds values with correct SQL types, rejects invalid formats/ranges
+  // - Inserts the row and returns the new id; queues search indexing (best effort)
+  // - If the physical table is missing but the definition exists, returns INTERNAL
+  rpc PostTableData(PostTableDataRequest) returns (PostTableDataResponse);
+
+  // Update existing row data with strict type binding and script validation.
+  //
+  // Behavior:
+  // - Validates profile and table, and that the record exists
+  // - If request data is empty, returns success without changing the row
+  // - For columns targeted by scripts:
+  //    • If included in update, provided value must equal the script result
+  //    • If not included, update must not cause the script result to differ
+  //      from the current stored value; otherwise FAILED_PRECONDITION is returned
+  // - Binds values with correct SQL types; rejects invalid formats/ranges
+  // - Updates the row and returns the id; queues search indexing (best effort)
+  rpc PutTableData(PutTableDataRequest) returns (PutTableDataResponse);
+
+  // Soft-delete a single record (sets deleted = true) if it exists and is not already deleted.
+  //
+  // Behavior:
+  // - Validates profile and table definition
+  // - Updates only rows with deleted = false
+  // - success = true means a row was actually changed; false means nothing to delete
+  // - If the physical table is missing but the definition exists, returns INTERNAL
+  rpc DeleteTableData(DeleteTableDataRequest) returns (DeleteTableDataResponse);
+
+  // Fetch a single non-deleted row by id as textified values.
+  //
+  // Behavior:
+  // - Validates profile and table definition
+  // - Returns all columns as strings (COALESCE(col::TEXT, '') AS col)
+  //   including: id, deleted, all user-defined columns, and FK columns
+  //   named "<linked_table>_id" for each table link
+  // - Fails with NOT_FOUND if record does not exist or is soft-deleted
+  // - If the physical table is missing but the definition exists, returns INTERNAL
   rpc GetTableData(GetTableDataRequest) returns (GetTableDataResponse);
+
+  // Count non-deleted rows in a table.
+  //
+  // Behavior:
+  // - Validates profile and table definition
+  // - Returns komp_ac.common.CountResponse.count with rows where deleted = FALSE
+  // - If the physical table is missing but the definition exists, returns INTERNAL
   rpc GetTableDataCount(GetTableDataCountRequest) returns (komp_ac.common.CountResponse);
+
+  // Fetch the N-th non-deleted row by id order (1-based), then return its full data.
+  //
+  // Behavior:
+  // - position is 1-based (position = 1 → first row by id ASC with deleted = FALSE)
+  // - Returns NOT_FOUND if position is out of bounds
+  // - Otherwise identical to GetTableData for the selected id
   rpc GetTableDataByPosition(GetTableDataByPositionRequest) returns (GetTableDataResponse);
 }
 
+// Insert a new row.
 message PostTableDataRequest {
+  // Required. Profile (PostgreSQL schema) name that owns the table.
+  // Must exist in the schemas table.
   string profile_name = 1;
+
+  // Required. Logical table (definition) name within the profile.
+  // Must exist in table_definitions for the given profile.
   string table_name = 2;
+
+  // Required. Key-value data for columns to insert.
+  //
+  // Allowed keys:
+  // - User-defined columns from the table definition
+  // - System/FK columns:
+  //    • "deleted" (BOOLEAN), optional; default FALSE if not provided
+  //    • "<linked_table>_id" (BIGINT) for each table link
+  //
+  // Type expectations by SQL type:
+  // - TEXT: string value; empty string is treated as NULL
+  // - BOOLEAN: bool value
+  // - TIMESTAMPTZ: ISO 8601/RFC 3339 string (parsed to TIMESTAMPTZ)
+  // - INTEGER: number with no fractional part and within i32 range
+  // - BIGINT: number with no fractional part and within i64 range
+  // - NUMERIC(p,s): string representation only; empty string becomes NULL
+  //   (numbers for NUMERIC are rejected to avoid precision loss)
+  //
+  // Script validation rules:
+  // - If a script exists for a target column, that column MUST be present here,
+  //   and its provided value MUST equal the script’s computed value (type-aware
+  //   comparison, e.g., decimals are compared numerically).
+  //
+  // Notes:
+  // - Unknown/invalid column names are rejected
+  // - Some application-specific validations may apply (e.g., max length for
+  //   certain fields like "telefon")
   map<string, google.protobuf.Value> data = 3;
 }
 
+// Insert response.
 message PostTableDataResponse {
+  // True if the insert succeeded.
   bool success = 1;
+
+  // Human-readable message.
   string message = 2;
+
+  // The id of the inserted row.
   int64 inserted_id = 3;
 }
 
+// Update an existing row.
 message PutTableDataRequest {
+  // Required. Profile (schema) name.
   string profile_name = 1;
+
+  // Required. Table name within the profile.
   string table_name = 2;
+
+  // Required. Id of the row to update.
   int64 id = 3;
+
+  // Required. Columns to update (same typing rules as PostTableDataRequest.data).
+  //
+  // Special script rules:
+  // - If a script targets column X and X is included here, the value for X must
+  //   equal the script’s result (type-aware).
+  // - If X is not included here but the update would cause the script’s result
+  //   to change compared to the current stored value, the update is rejected with
+  //   FAILED_PRECONDITION, instructing the caller to include X explicitly.
+  //
+  // Passing an empty map results in a no-op success response.
   map<string, google.protobuf.Value> data = 4;
 }
 
+// Update response.
 message PutTableDataResponse {
+  // True if the update succeeded (or no-op on empty data).
   bool success = 1;
+
+  // Human-readable message.
   string message = 2;
+
+  // The id of the updated row.
   int64 updated_id = 3;
 }
 
+// Soft-delete a single row.
 message DeleteTableDataRequest {
+  // Required. Profile (schema) name.
   string profile_name = 1;
+
+  // Required. Table name within the profile.
   string table_name = 2;
+
+  // Required. Row id to soft-delete.
   int64 record_id = 3;
 }
 
+// Soft-delete response.
 message DeleteTableDataResponse {
+  // True if a row was marked deleted (id existed and was not already deleted).
   bool success = 1;
 }
 
+// Fetch a single non-deleted row by id.
 message GetTableDataRequest {
+  // Required. Profile (schema) name.
   string profile_name = 1;
+
+  // Required. Table name within the profile.
   string table_name = 2;
+
+  // Required. Id of the row to fetch.
   int64 id = 3;
 }
 
+// Row payload: all columns returned as strings.
 message GetTableDataResponse {
+  // Map of column_name → stringified value for:
+  // - id, deleted
+  // - all user-defined columns from the table definition
+  // - FK columns named "<linked_table>_id" for each table link
+  //
+  // All values are returned as TEXT via col::TEXT and COALESCEed to empty string
+  // (NULL becomes ""). The row is returned only if deleted = FALSE.
   map<string, string> data = 1;
 }
 
+// Count non-deleted rows.
 message GetTableDataCountRequest {
-    string profile_name = 1;
-    string table_name = 2;
+  // Required. Profile (schema) name.
+  string profile_name = 1;
+
+  // Required. Table name within the profile.
+  string table_name = 2;
 }
 
+// Fetch by ordinal position among non-deleted rows (1-based).
 message GetTableDataByPositionRequest {
+  // Required. Profile (schema) name.
   string profile_name = 1;
+
+  // Required. Table name within the profile.
   string table_name = 2;
+
+  // Required. 1-based position by id ascending among rows with deleted = FALSE.
   int32 position = 3;
 }
diff --git a/common/src/proto/descriptor.bin b/common/src/proto/descriptor.bin
index 61967eb..a093404 100644
Binary files a/common/src/proto/descriptor.bin and b/common/src/proto/descriptor.bin differ
diff --git a/common/src/proto/komp_ac.table_definition.rs b/common/src/proto/komp_ac.table_definition.rs
index 71137c6..e90dd30 100644
--- a/common/src/proto/komp_ac.table_definition.rs
+++ b/common/src/proto/komp_ac.table_definition.rs
@@ -1,77 +1,133 @@
 // This file is @generated by prost-build.
+/// A single link to another table within the same profile (schema).
 #[derive(serde::Serialize, serde::Deserialize)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct TableLink {
+    /// Name of an existing table within the same profile to link to.
+    /// For each link, a "<linked>_id" column is created on the new table.
+    /// That column references "<linked>"(id) and adds an index automatically.
     #[prost(string, tag = "1")]
     pub linked_table_name: ::prost::alloc::string::String,
+    /// If true, the generated foreign key column is NOT NULL.
+    /// Otherwise the column allows NULL.
+    /// Duplicate links to the same target table in one request are rejected.
     #[prost(bool, tag = "2")]
     pub required: bool,
 }
+/// Defines the input for creating a new table definition.
 #[derive(serde::Serialize, serde::Deserialize)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct PostTableDefinitionRequest {
+    /// Table name to create inside the target profile.
+    /// Must be lowercase, alphanumeric with underscores,
+    /// start with a letter, and be <= 63 chars.
+    /// Forbidden names: "id", "deleted", "created_at", or ending in "_id".
     #[prost(string, tag = "1")]
     pub table_name: ::prost::alloc::string::String,
+    /// List of links (foreign keys) to existing tables in the same profile.
+    /// Each will automatically get a "<linked>_id" column and an index.
     #[prost(message, repeated, tag = "2")]
     pub links: ::prost::alloc::vec::Vec<TableLink>,
+    /// List of user-defined columns (adds to system/id/fk columns).
     #[prost(message, repeated, tag = "3")]
     pub columns: ::prost::alloc::vec::Vec<ColumnDefinition>,
+    /// List of column names to be indexed (must match existing user-defined columns).
+    /// Indexes can target only user-defined columns; system columns ("id", "deleted",
+    /// "created_at") and automatically generated foreign key ("*_id") columns already
+    /// have indexes. Requests trying to index those columns are rejected.
     #[prost(string, repeated, tag = "4")]
     pub indexes: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+    /// Name of profile (Postgres schema) where the table will be created.
+    /// Same naming rules as table_name; cannot collide with reserved schemas
+    /// like "public", "information_schema", or ones starting with "pg_".
     #[prost(string, tag = "5")]
     pub profile_name: ::prost::alloc::string::String,
 }
+/// Describes one user-defined column for a table.
 #[derive(serde::Serialize, serde::Deserialize)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct ColumnDefinition {
+    /// Column name that follows the same validation rules as table_name.
+    /// Must be lowercase, start with a letter, no uppercase characters,
+    /// and cannot be "id", "deleted", "created_at", or end with "_id".
     #[prost(string, tag = "1")]
     pub name: ::prost::alloc::string::String,
+    /// Logical column type. Supported values (case-insensitive):
+    ///    TEXT / STRING
+    ///    BOOLEAN
+    ///    TIMESTAMP / TIMESTAMPTZ / TIME
+    ///    MONEY (= NUMERIC(14,4))
+    ///    INTEGER / INT
+    ///    BIGINTEGER / BIGINT
+    ///    DATE
+    ///    DECIMAL(p,s) → NUMERIC(p,s)
+    /// DECIMAL args must be integers (no sign, no dot, no leading zeros);
+    /// s ≤ p and p ≥ 1.
     #[prost(string, tag = "2")]
     pub field_type: ::prost::alloc::string::String,
 }
+/// Response after table creation (success + DDL preview).
 #[derive(serde::Serialize, serde::Deserialize)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct TableDefinitionResponse {
+    /// True if all DB changes and metadata inserts succeeded.
     #[prost(bool, tag = "1")]
     pub success: bool,
+    /// The actual SQL executed: CREATE TABLE + CREATE INDEX statements.
     #[prost(string, tag = "2")]
     pub sql: ::prost::alloc::string::String,
 }
+/// Describes the tree of all profiles and their tables.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct ProfileTreeResponse {
+    /// All profiles in the system.
     #[prost(message, repeated, tag = "1")]
     pub profiles: ::prost::alloc::vec::Vec<profile_tree_response::Profile>,
 }
 /// Nested message and enum types in `ProfileTreeResponse`.
 pub mod profile_tree_response {
+    /// Table entry in a profile.
     #[derive(Clone, PartialEq, ::prost::Message)]
     pub struct Table {
+        /// Internal ID from table_definitions.id (metadata record).
         #[prost(int64, tag = "1")]
         pub id: i64,
+        /// Table name within the profile (schema).
         #[prost(string, tag = "2")]
         pub name: ::prost::alloc::string::String,
+        /// Other tables this one references (based on link definitions only).
         #[prost(string, repeated, tag = "3")]
         pub depends_on: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
     }
+    /// Profile (schema) entry.
     #[derive(Clone, PartialEq, ::prost::Message)]
     pub struct Profile {
+        /// Name of the schema/profile (as stored in `schemas.name`).
         #[prost(string, tag = "1")]
         pub name: ::prost::alloc::string::String,
+        /// All tables in that schema and their dependencies.
         #[prost(message, repeated, tag = "2")]
         pub tables: ::prost::alloc::vec::Vec<Table>,
     }
 }
+/// Request to delete one table definition entirely.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct DeleteTableRequest {
+    /// Profile (schema) name owning the table (must exist).
     #[prost(string, tag = "1")]
     pub profile_name: ::prost::alloc::string::String,
+    /// Table to drop (must exist in the profile).
+    /// Executes DROP TABLE "profile"."table" CASCADE and then removes metadata.
     #[prost(string, tag = "2")]
     pub table_name: ::prost::alloc::string::String,
 }
+/// Response after table deletion.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct DeleteTableResponse {
+    /// True if table and metadata were successfully deleted in one transaction.
     #[prost(bool, tag = "1")]
     pub success: bool,
+    /// Human-readable summary of what was removed.
     #[prost(string, tag = "2")]
     pub message: ::prost::alloc::string::String,
 }
@@ -86,6 +142,10 @@ pub mod table_definition_client {
     )]
     use tonic::codegen::*;
     use tonic::codegen::http::Uri;
+    /// The TableDefinition service manages the entire lifecycle of user-defined
+    /// tables (stored as both metadata and physical PostgreSQL tables) inside
+    /// logical "profiles" (schemas). Each table has stored structure, links, and
+    /// validation rules.
     #[derive(Debug, Clone)]
     pub struct TableDefinitionClient<T> {
         inner: tonic::client::Grpc<T>,
@@ -166,6 +226,9 @@ pub mod table_definition_client {
             self.inner = self.inner.max_encoding_message_size(limit);
             self
         }
+        /// Creates a new table (and schema if missing) with system columns,
+        /// linked-table foreign keys, user-defined columns, and optional indexes.
+        /// Also inserts metadata and default validation rules. Entirely transactional.
         pub async fn post_table_definition(
             &mut self,
             request: impl tonic::IntoRequest<super::PostTableDefinitionRequest>,
@@ -195,6 +258,8 @@ pub mod table_definition_client {
                 );
             self.inner.unary(req, path, codec).await
         }
+        /// Lists all profiles (schemas) and their tables with declared dependencies.
+        /// This provides a tree-like overview of table relationships.
         pub async fn get_profile_tree(
             &mut self,
             request: impl tonic::IntoRequest<super::super::common::Empty>,
@@ -224,6 +289,7 @@ pub mod table_definition_client {
                 );
             self.inner.unary(req, path, codec).await
         }
+        /// Drops a table and its metadata, then deletes the profile if it becomes empty.
         pub async fn delete_table(
             &mut self,
             request: impl tonic::IntoRequest<super::DeleteTableRequest>,
@@ -268,6 +334,9 @@ pub mod table_definition_server {
     /// Generated trait containing gRPC methods that should be implemented for use with TableDefinitionServer.
     #[async_trait]
     pub trait TableDefinition: std::marker::Send + std::marker::Sync + 'static {
+        /// Creates a new table (and schema if missing) with system columns,
+        /// linked-table foreign keys, user-defined columns, and optional indexes.
+        /// Also inserts metadata and default validation rules. Entirely transactional.
         async fn post_table_definition(
             &self,
             request: tonic::Request<super::PostTableDefinitionRequest>,
@@ -275,6 +344,8 @@ pub mod table_definition_server {
             tonic::Response<super::TableDefinitionResponse>,
             tonic::Status,
         >;
+        /// Lists all profiles (schemas) and their tables with declared dependencies.
+        /// This provides a tree-like overview of table relationships.
         async fn get_profile_tree(
             &self,
             request: tonic::Request<super::super::common::Empty>,
@@ -282,6 +353,7 @@ pub mod table_definition_server {
             tonic::Response<super::ProfileTreeResponse>,
             tonic::Status,
         >;
+        /// Drops a table and its metadata, then deletes the profile if it becomes empty.
         async fn delete_table(
             &self,
             request: tonic::Request<super::DeleteTableRequest>,
@@ -290,6 +362,10 @@ pub mod table_definition_server {
             tonic::Status,
         >;
     }
+    /// The TableDefinition service manages the entire lifecycle of user-defined
+    /// tables (stored as both metadata and physical PostgreSQL tables) inside
+    /// logical "profiles" (schemas). Each table has stored structure, links, and
+    /// validation rules.
     #[derive(Debug)]
     pub struct TableDefinitionServer<T> {
         inner: Arc<T>,
diff --git a/common/src/proto/komp_ac.table_script.rs b/common/src/proto/komp_ac.table_script.rs
index d6901c9..672b26e 100644
--- a/common/src/proto/komp_ac.table_script.rs
+++ b/common/src/proto/komp_ac.table_script.rs
@@ -1,21 +1,70 @@
 // This file is @generated by prost-build.
+/// Request to create or update a script bound to a specific table and column.
 #[derive(serde::Serialize, serde::Deserialize)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct PostTableScriptRequest {
+    /// Required. The metadata ID from table_definitions.id that identifies the
+    /// table this script belongs to. The table must exist; its schema determines
+    /// where referenced tables/columns are validated and where dependencies are stored.
     #[prost(int64, tag = "1")]
     pub table_definition_id: i64,
+    /// Required. The target column in the target table that this script computes.
+    /// Must be an existing user-defined column in that table (not a system column).
+    /// System columns are reserved: "id", "deleted", "created_at".
+    /// The column's data type must NOT be one of the prohibited target types:
+    ///    BIGINT, DATE, TIMESTAMPTZ
+    /// Note: BOOLEAN targets are allowed (values are converted to Steel #true/#false).
     #[prost(string, tag = "2")]
     pub target_column: ::prost::alloc::string::String,
+    /// Required. The script in the Steel DSL (S-expression style).
+    /// Syntax requirements:
+    ///    - Non-empty, must start with '('
+    ///    - Balanced parentheses
+    ///
+    /// Referencing data:
+    ///    - Structured table/column access (enforces link constraints):
+    ///        (steel_get_column "table_name" "column_name")
+    ///        (steel_get_column_with_index "table_name" index "column_name")
+    ///        • index must be a non-negative integer literal
+    ///        • self-references are allowed without links
+    ///        • other tables require an explicit link from the source table
+    ///          (table_definition_links) or the request fails
+    ///    - Raw SQL access (no link required, but still validated):
+    ///        (steel_query_sql "SELECT ...")
+    ///        • Basic checks disallow operations that imply prohibited types,
+    ///          e.g., EXTRACT(…), DATE_PART(…), ::DATE, ::TIMESTAMPTZ, ::BIGINT, CAST(…)
+    ///    - Self variable access in transformed scripts:
+    ///        (get-var "column_name") is treated as referencing the current table
+    ///
+    /// Math operations:
+    ///    - The script is transformed by steel_decimal; supported math forms include:
+    ///      +, -, *, /, ^, **, pow, sqrt, >, <, =, >=, <=, min, max, abs, round,
+    ///      ln, log, log10, exp, sin, cos, tan
+    ///    - Columns of the following types CANNOT be used inside math expressions:
+    ///      BIGINT, TEXT, BOOLEAN, DATE, TIMESTAMPTZ
+    ///
+    /// Dependency tracking and cycles:
+    ///    - Dependencies are extracted from steel_get_column(_with_index), get-var,
+    ///      and steel_query_sql and stored in script_dependencies with context
+    ///    - Cycles across tables are rejected (self-dependency is allowed)
     #[prost(string, tag = "3")]
     pub script: ::prost::alloc::string::String,
+    /// Optional. Free-text description stored alongside the script (no functional effect).
     #[prost(string, tag = "4")]
     pub description: ::prost::alloc::string::String,
 }
+/// Response after creating or updating a script.
 #[derive(serde::Serialize, serde::Deserialize)]
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct TableScriptResponse {
+    /// The ID of the script record in table_scripts (new or existing on upsert).
     #[prost(int64, tag = "1")]
     pub id: i64,
+    /// Human-readable warnings concatenated into a single string. Possible messages:
+    ///   - Warning if the script references itself (may affect first population)
+    ///   - Count of raw SQL queries present
+    ///   - Info about number of structured linked-table accesses
+    ///   - Warning if many dependencies may affect performance
     #[prost(string, tag = "2")]
     pub warnings: ::prost::alloc::string::String,
 }
@@ -30,6 +79,18 @@ pub mod table_script_client {
     )]
     use tonic::codegen::*;
     use tonic::codegen::http::Uri;
+    /// Manages column-computation scripts for user-defined tables.
+    /// Each script belongs to a single table (table_definition_id) and populates
+    /// exactly one target column in that table. The server:
+    /// - Validates script syntax (non-empty, balanced parentheses, starts with '(')
+    /// - Validates the target column (exists, not a system column, allowed type)
+    /// - Validates column/type usage inside math expressions
+    /// - Validates referenced tables/columns against the schema
+    /// - Enforces link constraints for structured access (see notes below)
+    /// - Analyzes dependencies and prevents cycles across the schema
+    /// - Transforms the script to decimal-safe math (steel_decimal)
+    /// - Upserts into table_scripts and records dependencies in script_dependencies
+    /// The whole operation is transactional.
     #[derive(Debug, Clone)]
     pub struct TableScriptClient<T> {
         inner: tonic::client::Grpc<T>,
@@ -110,6 +171,23 @@ pub mod table_script_client {
             self.inner = self.inner.max_encoding_message_size(limit);
             self
         }
+        /// Create or update a script for a specific table and target column.
+        ///
+        /// Behavior:
+        /// - Fetches the table by table_definition_id (must exist)
+        /// - Validates "script" (syntax), "target_column" (exists and type rules),
+        ///   and all referenced tables/columns (must exist in same schema)
+        /// - Validates math operations: prohibits using certain data types in math
+        /// - Enforces link constraints for structured table access:
+        ///    • Allowed always: self-references (same table)
+        ///    • Structured access via steel_get_column / steel_get_column_with_index
+        ///      requires an explicit link in table_definition_links
+        ///    • Raw SQL access via steel_query_sql is permitted (still validated)
+        /// - Detects and rejects circular dependencies across all scripts in the schema
+        ///   (self-references are allowed and not treated as cycles)
+        /// - Transforms the script to decimal-safe operations (steel_decimal)
+        /// - UPSERTS into table_scripts on (table_definitions_id, target_column)
+        ///   and saves a normalized dependency list into script_dependencies
         pub async fn post_table_script(
             &mut self,
             request: impl tonic::IntoRequest<super::PostTableScriptRequest>,
@@ -154,6 +232,23 @@ pub mod table_script_server {
     /// Generated trait containing gRPC methods that should be implemented for use with TableScriptServer.
     #[async_trait]
     pub trait TableScript: std::marker::Send + std::marker::Sync + 'static {
+        /// Create or update a script for a specific table and target column.
+        ///
+        /// Behavior:
+        /// - Fetches the table by table_definition_id (must exist)
+        /// - Validates "script" (syntax), "target_column" (exists and type rules),
+        ///   and all referenced tables/columns (must exist in same schema)
+        /// - Validates math operations: prohibits using certain data types in math
+        /// - Enforces link constraints for structured table access:
+        ///    • Allowed always: self-references (same table)
+        ///    • Structured access via steel_get_column / steel_get_column_with_index
+        ///      requires an explicit link in table_definition_links
+        ///    • Raw SQL access via steel_query_sql is permitted (still validated)
+        /// - Detects and rejects circular dependencies across all scripts in the schema
+        ///   (self-references are allowed and not treated as cycles)
+        /// - Transforms the script to decimal-safe operations (steel_decimal)
+        /// - UPSERTS into table_scripts on (table_definitions_id, target_column)
+        ///   and saves a normalized dependency list into script_dependencies
         async fn post_table_script(
             &self,
             request: tonic::Request<super::PostTableScriptRequest>,
@@ -162,6 +257,18 @@ pub mod table_script_server {
             tonic::Status,
         >;
     }
+    /// Manages column-computation scripts for user-defined tables.
+    /// Each script belongs to a single table (table_definition_id) and populates
+    /// exactly one target column in that table. The server:
+    /// - Validates script syntax (non-empty, balanced parentheses, starts with '(')
+    /// - Validates the target column (exists, not a system column, allowed type)
+    /// - Validates column/type usage inside math expressions
+    /// - Validates referenced tables/columns against the schema
+    /// - Enforces link constraints for structured access (see notes below)
+    /// - Analyzes dependencies and prevents cycles across the schema
+    /// - Transforms the script to decimal-safe math (steel_decimal)
+    /// - Upserts into table_scripts and records dependencies in script_dependencies
+    /// The whole operation is transactional.
     #[derive(Debug)]
     pub struct TableScriptServer<T> {
         inner: Arc<T>,
diff --git a/common/src/proto/komp_ac.table_structure.rs b/common/src/proto/komp_ac.table_structure.rs
index ea2f418..1e48052 100644
--- a/common/src/proto/komp_ac.table_structure.rs
+++ b/common/src/proto/komp_ac.table_structure.rs
@@ -1,27 +1,46 @@
 // This file is @generated by prost-build.
+/// Request identifying the profile (schema) and table to inspect.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct GetTableStructureRequest {
-    /// e.g., "default"
+    /// Required. Profile (PostgreSQL schema) name. Must exist in `schemas`.
     #[prost(string, tag = "1")]
     pub profile_name: ::prost::alloc::string::String,
-    /// e.g., "2025_adresar6"
+    /// Required. Table name within the profile. Must exist in `table_definitions`
+    /// for the given profile. The physical table is then introspected via
+    /// information_schema.
     #[prost(string, tag = "2")]
     pub table_name: ::prost::alloc::string::String,
 }
+/// Response with the ordered list of columns (by ordinal position).
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct TableStructureResponse {
+    /// Columns of the physical table, including system columns (id, deleted,
+    /// created_at), user-defined columns, and any foreign-key columns such as
+    /// "<linked_table>_id". May be empty if the physical table is missing.
     #[prost(message, repeated, tag = "1")]
     pub columns: ::prost::alloc::vec::Vec<TableColumn>,
 }
+/// One physical column entry as reported by information_schema.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct TableColumn {
+    /// Column name exactly as defined in PostgreSQL.
     #[prost(string, tag = "1")]
     pub name: ::prost::alloc::string::String,
-    /// e.g., "TEXT", "BIGINT", "VARCHAR(255)", "TIMESTAMPTZ"
+    /// Normalized data type string derived from information_schema:
+    /// - VARCHAR(n) when udt_name='varchar' with character_maximum_length
+    /// - CHAR(n) when udt_name='bpchar' with character_maximum_length
+    /// - NUMERIC(p,s) when udt_name='numeric' with precision and scale
+    /// - NUMERIC(p) when udt_name='numeric' with precision only
+    /// - <TYPE>\[\] for array types (udt_name starting with '_', e.g., INT\[\] )
+    /// - Otherwise UPPER(udt_name), e.g., TEXT, BIGINT, TIMESTAMPTZ
+    /// Examples: "TEXT", "BIGINT", "VARCHAR(255)", "TIMESTAMPTZ", "NUMERIC(14,4)"
     #[prost(string, tag = "2")]
     pub data_type: ::prost::alloc::string::String,
+    /// True if information_schema reports the column as nullable.
     #[prost(bool, tag = "3")]
     pub is_nullable: bool,
+    /// True if the column is part of the table's PRIMARY KEY.
+    /// Typically true for the "id" column created by the system.
     #[prost(bool, tag = "4")]
     pub is_primary_key: bool,
 }
@@ -36,6 +55,14 @@ pub mod table_structure_service_client {
     )]
     use tonic::codegen::*;
     use tonic::codegen::http::Uri;
+    /// Introspects the physical PostgreSQL table for a given logical table
+    /// (defined in table_definitions) and returns its column structure.
+    /// The server validates that:
+    /// - The profile (schema) exists in `schemas`
+    /// - The table is defined for that profile in `table_definitions`
+    /// It then queries information_schema for the physical table and returns
+    /// normalized column metadata. If the physical table is missing despite
+    /// a definition, the response may contain an empty `columns` list.
     #[derive(Debug, Clone)]
     pub struct TableStructureServiceClient<T> {
         inner: tonic::client::Grpc<T>,
@@ -116,6 +143,16 @@ pub mod table_structure_service_client {
             self.inner = self.inner.max_encoding_message_size(limit);
             self
         }
+        /// Return the physical column list (name, normalized data_type,
+        /// nullability, primary key flag) for a table in a profile.
+        ///
+        /// Behavior:
+        /// - NOT_FOUND if profile doesn't exist in `schemas`
+        /// - NOT_FOUND if table not defined for that profile in `table_definitions`
+        /// - Queries information_schema.columns ordered by ordinal position
+        /// - Normalizes data_type text (details under TableColumn.data_type)
+        /// - Returns an empty list if the table is validated but has no visible
+        ///   columns in information_schema (e.g., physical table missing)
         pub async fn get_table_structure(
             &mut self,
             request: impl tonic::IntoRequest<super::GetTableStructureRequest>,
@@ -160,6 +197,16 @@ pub mod table_structure_service_server {
     /// Generated trait containing gRPC methods that should be implemented for use with TableStructureServiceServer.
     #[async_trait]
     pub trait TableStructureService: std::marker::Send + std::marker::Sync + 'static {
+        /// Return the physical column list (name, normalized data_type,
+        /// nullability, primary key flag) for a table in a profile.
+        ///
+        /// Behavior:
+        /// - NOT_FOUND if profile doesn't exist in `schemas`
+        /// - NOT_FOUND if table not defined for that profile in `table_definitions`
+        /// - Queries information_schema.columns ordered by ordinal position
+        /// - Normalizes data_type text (details under TableColumn.data_type)
+        /// - Returns an empty list if the table is validated but has no visible
+        ///   columns in information_schema (e.g., physical table missing)
         async fn get_table_structure(
             &self,
             request: tonic::Request<super::GetTableStructureRequest>,
@@ -168,6 +215,14 @@ pub mod table_structure_service_server {
             tonic::Status,
         >;
     }
+    /// Introspects the physical PostgreSQL table for a given logical table
+    /// (defined in table_definitions) and returns its column structure.
+    /// The server validates that:
+    /// - The profile (schema) exists in `schemas`
+    /// - The table is defined for that profile in `table_definitions`
+    /// It then queries information_schema for the physical table and returns
+    /// normalized column metadata. If the physical table is missing despite
+    /// a definition, the response may contain an empty `columns` list.
     #[derive(Debug)]
     pub struct TableStructureServiceServer<T> {
         inner: Arc<T>,
diff --git a/common/src/proto/komp_ac.tables_data.rs b/common/src/proto/komp_ac.tables_data.rs
index f9cd644..a738033 100644
--- a/common/src/proto/komp_ac.tables_data.rs
+++ b/common/src/proto/komp_ac.tables_data.rs
@@ -1,92 +1,170 @@
 // This file is @generated by prost-build.
+/// Insert a new row.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct PostTableDataRequest {
+    /// Required. Profile (PostgreSQL schema) name that owns the table.
+    /// Must exist in the schemas table.
     #[prost(string, tag = "1")]
     pub profile_name: ::prost::alloc::string::String,
+    /// Required. Logical table (definition) name within the profile.
+    /// Must exist in table_definitions for the given profile.
     #[prost(string, tag = "2")]
     pub table_name: ::prost::alloc::string::String,
+    /// Required. Key-value data for columns to insert.
+    ///
+    /// Allowed keys:
+    /// - User-defined columns from the table definition
+    /// - System/FK columns:
+    ///     • "deleted" (BOOLEAN), optional; default FALSE if not provided
+    ///     • "<linked_table>_id" (BIGINT) for each table link
+    ///
+    /// Type expectations by SQL type:
+    /// - TEXT: string value; empty string is treated as NULL
+    /// - BOOLEAN: bool value
+    /// - TIMESTAMPTZ: ISO 8601/RFC 3339 string (parsed to TIMESTAMPTZ)
+    /// - INTEGER: number with no fractional part and within i32 range
+    /// - BIGINT: number with no fractional part and within i64 range
+    /// - NUMERIC(p,s): string representation only; empty string becomes NULL
+    ///    (numbers for NUMERIC are rejected to avoid precision loss)
+    ///
+    /// Script validation rules:
+    /// - If a script exists for a target column, that column MUST be present here,
+    ///    and its provided value MUST equal the script’s computed value (type-aware
+    ///    comparison, e.g., decimals are compared numerically).
+    ///
+    /// Notes:
+    /// - Unknown/invalid column names are rejected
+    /// - Some application-specific validations may apply (e.g., max length for
+    ///    certain fields like "telefon")
     #[prost(map = "string, message", tag = "3")]
     pub data: ::std::collections::HashMap<
         ::prost::alloc::string::String,
         ::prost_types::Value,
     >,
 }
+/// Insert response.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct PostTableDataResponse {
+    /// True if the insert succeeded.
     #[prost(bool, tag = "1")]
     pub success: bool,
+    /// Human-readable message.
     #[prost(string, tag = "2")]
     pub message: ::prost::alloc::string::String,
+    /// The id of the inserted row.
     #[prost(int64, tag = "3")]
     pub inserted_id: i64,
 }
+/// Update an existing row.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct PutTableDataRequest {
+    /// Required. Profile (schema) name.
     #[prost(string, tag = "1")]
     pub profile_name: ::prost::alloc::string::String,
+    /// Required. Table name within the profile.
     #[prost(string, tag = "2")]
     pub table_name: ::prost::alloc::string::String,
+    /// Required. Id of the row to update.
     #[prost(int64, tag = "3")]
     pub id: i64,
+    /// Required. Columns to update (same typing rules as PostTableDataRequest.data).
+    ///
+    /// Special script rules:
+    /// - If a script targets column X and X is included here, the value for X must
+    ///    equal the script’s result (type-aware).
+    /// - If X is not included here but the update would cause the script’s result
+    ///    to change compared to the current stored value, the update is rejected with
+    ///    FAILED_PRECONDITION, instructing the caller to include X explicitly.
+    ///
+    /// Passing an empty map results in a no-op success response.
     #[prost(map = "string, message", tag = "4")]
     pub data: ::std::collections::HashMap<
         ::prost::alloc::string::String,
         ::prost_types::Value,
     >,
 }
+/// Update response.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct PutTableDataResponse {
+    /// True if the update succeeded (or no-op on empty data).
     #[prost(bool, tag = "1")]
     pub success: bool,
+    /// Human-readable message.
     #[prost(string, tag = "2")]
     pub message: ::prost::alloc::string::String,
+    /// The id of the updated row.
     #[prost(int64, tag = "3")]
     pub updated_id: i64,
 }
+/// Soft-delete a single row.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct DeleteTableDataRequest {
+    /// Required. Profile (schema) name.
     #[prost(string, tag = "1")]
     pub profile_name: ::prost::alloc::string::String,
+    /// Required. Table name within the profile.
     #[prost(string, tag = "2")]
     pub table_name: ::prost::alloc::string::String,
+    /// Required. Row id to soft-delete.
     #[prost(int64, tag = "3")]
     pub record_id: i64,
 }
+/// Soft-delete response.
 #[derive(Clone, Copy, PartialEq, ::prost::Message)]
 pub struct DeleteTableDataResponse {
+    /// True if a row was marked deleted (id existed and was not already deleted).
     #[prost(bool, tag = "1")]
     pub success: bool,
 }
+/// Fetch a single non-deleted row by id.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct GetTableDataRequest {
+    /// Required. Profile (schema) name.
     #[prost(string, tag = "1")]
     pub profile_name: ::prost::alloc::string::String,
+    /// Required. Table name within the profile.
     #[prost(string, tag = "2")]
     pub table_name: ::prost::alloc::string::String,
+    /// Required. Id of the row to fetch.
     #[prost(int64, tag = "3")]
     pub id: i64,
 }
+/// Row payload: all columns returned as strings.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct GetTableDataResponse {
+    /// Map of column_name → stringified value for:
+    /// - id, deleted
+    /// - all user-defined columns from the table definition
+    /// - FK columns named "<linked_table>_id" for each table link
+    ///
+    /// All values are returned as TEXT via col::TEXT and COALESCEed to empty string
+    /// (NULL becomes ""). The row is returned only if deleted = FALSE.
     #[prost(map = "string, string", tag = "1")]
     pub data: ::std::collections::HashMap<
         ::prost::alloc::string::String,
         ::prost::alloc::string::String,
     >,
 }
+/// Count non-deleted rows.
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct GetTableDataCountRequest {
+    /// Required. Profile (schema) name.
     #[prost(string, tag = "1")]
     pub profile_name: ::prost::alloc::string::String,
+    /// Required. Table name within the profile.
     #[prost(string, tag = "2")]
     pub table_name: ::prost::alloc::string::String,
 }
+/// Fetch by ordinal position among non-deleted rows (1-based).
 #[derive(Clone, PartialEq, ::prost::Message)]
 pub struct GetTableDataByPositionRequest {
+    /// Required. Profile (schema) name.
     #[prost(string, tag = "1")]
     pub profile_name: ::prost::alloc::string::String,
+    /// Required. Table name within the profile.
     #[prost(string, tag = "2")]
     pub table_name: ::prost::alloc::string::String,
+    /// Required. 1-based position by id ascending among rows with deleted = FALSE.
     #[prost(int32, tag = "3")]
     pub position: i32,
 }
@@ -101,6 +179,11 @@ pub mod tables_data_client {
     )]
     use tonic::codegen::*;
     use tonic::codegen::http::Uri;
+    /// Read and write row data for user-defined tables inside profiles (schemas).
+    /// Operations are performed against the physical PostgreSQL table that
+    /// corresponds to the logical table definition and are scoped by profile
+    /// (schema). Deletions are soft (set deleted = true). Typed binding and
+    /// script-based validation are enforced consistently.
     #[derive(Debug, Clone)]
     pub struct TablesDataClient<T> {
         inner: tonic::client::Grpc<T>,
@@ -181,6 +264,16 @@ pub mod tables_data_client {
             self.inner = self.inner.max_encoding_message_size(limit);
             self
         }
+        /// Insert a new row into a table with strict type binding and script validation.
+        ///
+        /// Behavior:
+        /// - Validates that profile (schema) exists and table is defined for it
+        /// - Validates provided columns exist (user-defined or allowed system/FK columns)
+        /// - For columns targeted by scripts in this table, the client MUST provide the
+        ///   value, and it MUST equal the script’s calculated value (compared type-safely)
+        /// - Binds values with correct SQL types, rejects invalid formats/ranges
+        /// - Inserts the row and returns the new id; queues search indexing (best effort)
+        /// - If the physical table is missing but the definition exists, returns INTERNAL
         pub async fn post_table_data(
             &mut self,
             request: impl tonic::IntoRequest<super::PostTableDataRequest>,
@@ -207,6 +300,17 @@ pub mod tables_data_client {
                 );
             self.inner.unary(req, path, codec).await
         }
+        /// Update existing row data with strict type binding and script validation.
+        ///
+        /// Behavior:
+        /// - Validates profile and table, and that the record exists
+        /// - If request data is empty, returns success without changing the row
+        /// - For columns targeted by scripts:
+        ///    • If included in update, provided value must equal the script result
+        ///    • If not included, update must not cause the script result to differ
+        ///      from the current stored value; otherwise FAILED_PRECONDITION is returned
+        /// - Binds values with correct SQL types; rejects invalid formats/ranges
+        /// - Updates the row and returns the id; queues search indexing (best effort)
         pub async fn put_table_data(
             &mut self,
             request: impl tonic::IntoRequest<super::PutTableDataRequest>,
@@ -233,6 +337,13 @@ pub mod tables_data_client {
                 );
             self.inner.unary(req, path, codec).await
         }
+        /// Soft-delete a single record (sets deleted = true) if it exists and is not already deleted.
+        ///
+        /// Behavior:
+        /// - Validates profile and table definition
+        /// - Updates only rows with deleted = false
+        /// - success = true means a row was actually changed; false means nothing to delete
+        /// - If the physical table is missing but the definition exists, returns INTERNAL
         pub async fn delete_table_data(
             &mut self,
             request: impl tonic::IntoRequest<super::DeleteTableDataRequest>,
@@ -259,6 +370,15 @@ pub mod tables_data_client {
                 );
             self.inner.unary(req, path, codec).await
         }
+        /// Fetch a single non-deleted row by id as textified values.
+        ///
+        /// Behavior:
+        /// - Validates profile and table definition
+        /// - Returns all columns as strings (COALESCE(col::TEXT, '') AS col)
+        ///   including: id, deleted, all user-defined columns, and FK columns
+        ///   named "<linked_table>_id" for each table link
+        /// - Fails with NOT_FOUND if record does not exist or is soft-deleted
+        /// - If the physical table is missing but the definition exists, returns INTERNAL
         pub async fn get_table_data(
             &mut self,
             request: impl tonic::IntoRequest<super::GetTableDataRequest>,
@@ -285,6 +405,12 @@ pub mod tables_data_client {
                 );
             self.inner.unary(req, path, codec).await
         }
+        /// Count non-deleted rows in a table.
+        ///
+        /// Behavior:
+        /// - Validates profile and table definition
+        /// - Returns komp_ac.common.CountResponse.count with rows where deleted = FALSE
+        /// - If the physical table is missing but the definition exists, returns INTERNAL
         pub async fn get_table_data_count(
             &mut self,
             request: impl tonic::IntoRequest<super::GetTableDataCountRequest>,
@@ -314,6 +440,12 @@ pub mod tables_data_client {
                 );
             self.inner.unary(req, path, codec).await
         }
+        /// Fetch the N-th non-deleted row by id order (1-based), then return its full data.
+        ///
+        /// Behavior:
+        /// - position is 1-based (position = 1 → first row by id ASC with deleted = FALSE)
+        /// - Returns NOT_FOUND if position is out of bounds
+        /// - Otherwise identical to GetTableData for the selected id
         pub async fn get_table_data_by_position(
             &mut self,
             request: impl tonic::IntoRequest<super::GetTableDataByPositionRequest>,
@@ -358,6 +490,16 @@ pub mod tables_data_server {
     /// Generated trait containing gRPC methods that should be implemented for use with TablesDataServer.
     #[async_trait]
     pub trait TablesData: std::marker::Send + std::marker::Sync + 'static {
+        /// Insert a new row into a table with strict type binding and script validation.
+        ///
+        /// Behavior:
+        /// - Validates that profile (schema) exists and table is defined for it
+        /// - Validates provided columns exist (user-defined or allowed system/FK columns)
+        /// - For columns targeted by scripts in this table, the client MUST provide the
+        ///   value, and it MUST equal the script’s calculated value (compared type-safely)
+        /// - Binds values with correct SQL types, rejects invalid formats/ranges
+        /// - Inserts the row and returns the new id; queues search indexing (best effort)
+        /// - If the physical table is missing but the definition exists, returns INTERNAL
         async fn post_table_data(
             &self,
             request: tonic::Request<super::PostTableDataRequest>,
@@ -365,6 +507,17 @@ pub mod tables_data_server {
             tonic::Response<super::PostTableDataResponse>,
             tonic::Status,
         >;
+        /// Update existing row data with strict type binding and script validation.
+        ///
+        /// Behavior:
+        /// - Validates profile and table, and that the record exists
+        /// - If request data is empty, returns success without changing the row
+        /// - For columns targeted by scripts:
+        ///    • If included in update, provided value must equal the script result
+        ///    • If not included, update must not cause the script result to differ
+        ///      from the current stored value; otherwise FAILED_PRECONDITION is returned
+        /// - Binds values with correct SQL types; rejects invalid formats/ranges
+        /// - Updates the row and returns the id; queues search indexing (best effort)
         async fn put_table_data(
             &self,
             request: tonic::Request<super::PutTableDataRequest>,
@@ -372,6 +525,13 @@ pub mod tables_data_server {
             tonic::Response<super::PutTableDataResponse>,
             tonic::Status,
         >;
+        /// Soft-delete a single record (sets deleted = true) if it exists and is not already deleted.
+        ///
+        /// Behavior:
+        /// - Validates profile and table definition
+        /// - Updates only rows with deleted = false
+        /// - success = true means a row was actually changed; false means nothing to delete
+        /// - If the physical table is missing but the definition exists, returns INTERNAL
         async fn delete_table_data(
             &self,
             request: tonic::Request<super::DeleteTableDataRequest>,
@@ -379,6 +539,15 @@ pub mod tables_data_server {
             tonic::Response<super::DeleteTableDataResponse>,
             tonic::Status,
         >;
+        /// Fetch a single non-deleted row by id as textified values.
+        ///
+        /// Behavior:
+        /// - Validates profile and table definition
+        /// - Returns all columns as strings (COALESCE(col::TEXT, '') AS col)
+        ///   including: id, deleted, all user-defined columns, and FK columns
+        ///   named "<linked_table>_id" for each table link
+        /// - Fails with NOT_FOUND if record does not exist or is soft-deleted
+        /// - If the physical table is missing but the definition exists, returns INTERNAL
         async fn get_table_data(
             &self,
             request: tonic::Request<super::GetTableDataRequest>,
@@ -386,6 +555,12 @@ pub mod tables_data_server {
             tonic::Response<super::GetTableDataResponse>,
             tonic::Status,
         >;
+        /// Count non-deleted rows in a table.
+        ///
+        /// Behavior:
+        /// - Validates profile and table definition
+        /// - Returns komp_ac.common.CountResponse.count with rows where deleted = FALSE
+        /// - If the physical table is missing but the definition exists, returns INTERNAL
         async fn get_table_data_count(
             &self,
             request: tonic::Request<super::GetTableDataCountRequest>,
@@ -393,6 +568,12 @@ pub mod tables_data_server {
             tonic::Response<super::super::common::CountResponse>,
             tonic::Status,
         >;
+        /// Fetch the N-th non-deleted row by id order (1-based), then return its full data.
+        ///
+        /// Behavior:
+        /// - position is 1-based (position = 1 → first row by id ASC with deleted = FALSE)
+        /// - Returns NOT_FOUND if position is out of bounds
+        /// - Otherwise identical to GetTableData for the selected id
         async fn get_table_data_by_position(
             &self,
             request: tonic::Request<super::GetTableDataByPositionRequest>,
@@ -401,6 +582,11 @@ pub mod tables_data_server {
             tonic::Status,
         >;
     }
+    /// Read and write row data for user-defined tables inside profiles (schemas).
+    /// Operations are performed against the physical PostgreSQL table that
+    /// corresponds to the logical table definition and are scoped by profile
+    /// (schema). Deletions are soft (set deleted = true). Typed binding and
+    /// script-based validation are enforced consistently.
     #[derive(Debug)]
     pub struct TablesDataServer<T> {
         inner: Arc<T>,
diff --git a/flake.nix b/flake.nix
index f121004..d6963be 100644
--- a/flake.nix
+++ b/flake.nix
@@ -19,7 +19,7 @@
             cargo
             rustfmt
             clippy
-	    cargo-watch
+            cargo-watch
 
             # C build tools (for your linker issue)
             gcc
@@ -32,10 +32,11 @@
             
             # PostgreSQL for sqlx
             postgresql
-	    sqlx-cli
+            sqlx-cli
             
             # Protocol Buffers compiler for gRPC
             protobuf
+            protoc-gen-doc
           ];
 
           shellHook = ''